diff --git a/eos/saveddata/fit.py b/eos/saveddata/fit.py
index 2632707c7..359ba6a0f 100644
--- a/eos/saveddata/fit.py
+++ b/eos/saveddata/fit.py
@@ -17,7 +17,6 @@
 # along with eos.  If not, see <http://www.gnu.org/licenses/>.
 # ===============================================================================
 
-import copy
 import time
 from copy import deepcopy
 from itertools import chain
@@ -645,7 +644,7 @@ class Fit(object):
                 shadow = True
                 # Don't inspect this, we genuinely want to reassign self
                 # noinspection PyMethodFirstArgAssignment
-                self = copy.deepcopy(self)
+                self = deepcopy(self)
                 logger.debug("Handling self projection - making shadow copy of fit. %r => %r", copied, self)
                 # we delete the fit because when we copy a fit, flush() is
                 # called to properly handle projection updates. However, we do
@@ -1257,16 +1256,16 @@ class Fit(object):
 
         return True
 
-    def __deepcopy__(self, memo):
-        copy = Fit()
+    def __deepcopy__(self, memo=None):
+        copy_ship = Fit()
         # Character and owner are not copied
-        copy.character = self.__character
-        copy.owner = self.owner
-        copy.ship = deepcopy(self.ship, memo)
-        copy.name = "%s copy" % self.name
-        copy.damagePattern = self.damagePattern
-        copy.targetResists = self.targetResists
-        copy.notes = self.notes
+        copy_ship.character = self.__character
+        copy_ship.owner = self.owner
+        copy_ship.ship = deepcopy(self.ship)
+        copy_ship.name = "%s copy" % self.name
+        copy_ship.damagePattern = self.damagePattern
+        copy_ship.targetResists = self.targetResists
+        copy_ship.notes = self.notes
 
         toCopy = (
             "modules",
@@ -1280,17 +1279,17 @@ class Fit(object):
             "projectedFighters")
         for name in toCopy:
             orig = getattr(self, name)
-            c = getattr(copy, name)
+            c = getattr(copy_ship, name)
             for i in orig:
-                c.append(deepcopy(i, memo))
+                c.append(deepcopy(i))
 
         for fit in self.projectedFits:
-            copy.__projectedFits[fit.ID] = fit
+            copy_ship.__projectedFits[fit.ID] = fit
             # this bit is required -- see GH issue # 83
             eos.db.saveddata_session.flush()
             eos.db.saveddata_session.refresh(fit)
 
-        return copy
+        return copy_ship
 
     def __repr__(self):
         return u"Fit(ID={}, ship={}, name={}) at {}".format(
diff --git a/eos/saveddata/implantSet.py b/eos/saveddata/implantSet.py
index 2daaaa3eb..ca0334fff 100644
--- a/eos/saveddata/implantSet.py
+++ b/eos/saveddata/implantSet.py
@@ -48,13 +48,13 @@ class ImplantSet(object):
 
         return out.strip()
 
-    def __deepcopy__(self, memo):
+    def __deepcopy__(self):
         copy = ImplantSet(self.name)
         copy.name = "%s copy" % self.name
 
         orig = getattr(self, 'implants')
         c = getattr(copy, 'implants')
         for i in orig:
-            c.append(deepcopy(i, memo))
+            c.append(deepcopy(i))
 
         return copy
diff --git a/gui/builtinStatsViews/capacitorViewFull.py b/gui/builtinStatsViews/capacitorViewFull.py
index 6dab28404..f85b35e4c 100644
--- a/gui/builtinStatsViews/capacitorViewFull.py
+++ b/gui/builtinStatsViews/capacitorViewFull.py
@@ -131,8 +131,8 @@ class CapacitorViewFull(StatsView):
         capStable = fit.capStable if fit is not None else False
         lblNameTime = "label%sCapacitorTime"
         lblNameState = "label%sCapacitorState"
-        if isinstance(capState, tuple):
-            t = "%.1f%%-%.1f%%" % capState
+        if isinstance(capState, tuple) and len(capState) >= 2:
+            t = ("{0}%-{1}%", capState[0], capState[1])
             s = ""
         else:
             if capStable:
diff --git a/gui/itemStats.py b/gui/itemStats.py
index 9e4145fff..e14ecc27a 100644
--- a/gui/itemStats.py
+++ b/gui/itemStats.py
@@ -856,7 +856,7 @@ class ItemEffects(wx.Panel):
         elif 'wxMac' in wx.PlatformInfo:
             os.system("open " + file_)
         else:
-            subprocess.call(["xdg-open", file_])
+            subprocess.call({"xdg-open": file_})
 
     def RefreshValues(self, event):
         self.Freeze()
diff --git a/service/eveapi.py b/service/eveapi.py
index 67a238f47..d0bb067a7 100644
--- a/service/eveapi.py
+++ b/service/eveapi.py
@@ -346,19 +346,6 @@ class _Context(object):
         # perform arcane attribute majick trick
         return _Context(self._root, self._path + "/" + this, self.parameters)
 
-    def __call__(self, **kw):
-        if kw:
-            # specified keywords override contextual ones
-            for k, v in self.parameters.iteritems():
-                if k not in kw:
-                    kw[k] = v
-        else:
-            # no keywords provided, just update with contextual ones.
-            kw.update(self.parameters)
-
-        # now let the root context handle it further
-        return self._root(self._path, **kw)
-
 
 class _AuthContext(_Context):
     def character(self, characterID):
diff --git a/service/prefetch.py b/service/prefetch.py
index dda8a319f..06e6894c2 100644
--- a/service/prefetch.py
+++ b/service/prefetch.py
@@ -29,11 +29,6 @@ import logging
 
 logger = logging.getLogger(__name__)
 
-# The following code does not belong here, however until we rebuild skeletons
-# to include modified pyfa.py, this is the best place to put it. See GH issue
-# #176
-# @ todo: move this to pyfa.py
-
 # Make sure the saveddata db exists
 if config.savePath and not os.path.exists(config.savePath):
     os.mkdir(config.savePath)
diff --git a/tox.ini b/tox.ini
index 9e9d26985..adafb434a 100644
--- a/tox.ini
+++ b/tox.ini
@@ -12,6 +12,5 @@ commands = py.test -vv --cov Pyfa tests/
 
 [testenv:pep8]
 deps = flake8
-# TODO: Remove F class exceptions once all imports are fixed
 # TODO: Remove E731 and convert lambdas to defs
 commands = flake8 --exclude=.svn,CVS,.bzr,.hg,.git,__pycache__,venv,tests,.tox,build,dist,__init__.py --ignore=E126,E127,E128,E731 service gui eos utils config.py pyfa.py --max-line-length=165