I was given an old N scale Bachmann TGV set made in Hong Kong  that is cosmetically perfect and has all it's parts.  My problem is that the locomotive's rear wheel gears are made from a white plastic that seem to have cracks causing the real wheel assemble to bind up and freeze. I notice that the teeth of the gears jam at the hairline crack points.  I realize that this is an old set of trains and Bachmann no longer has parts for this set but is it possible to still find a locomotive real wheel assembly or , if not, the gears attached to the wheels?  I am also missing the small black plastic ring that separates the two half's of the metal chassis and the small metal contact that connects the pole of the motor to the light board.  Checked eBay but nothing there except a single passenger car from the set.  No locomotives.  And suggestions would be greatly appreciated

Thanks for all the advice.  I’ve filed the points and checked for smooth contact with the fixed rails. I’ve tried tightening and loosing the screw that hold the moveable switch part to the turnout.   Unfortunately the problem is intermittent.  The engine might make three passes over the turnout and on the fourth it will derail. This happens with all four engines so I don’t think it’s an engine problem.   If there were a consistent pattern to the problem it would be easer to determine the fix.  I’ve read in other posting that many people felt the solution to EZ-Trac problems was to go to Keto products.  Is going to Kato track the best cure as suggested?  Maybe I should have started with Kato in the first place.  I'm  new to this hobby and started with a Bachmann train set that was given to me.

I have some problem with the Bachmann n scale remote turnouts.  When I run my engines towards the switch, (single rail to the forked rails) the wheels of my engine will jump the movable switch part and try to go in the opposite direction from which the switch is set.  I can see that the switch has been slightly moved by the wheels of the engine. Don’t know if anyone has a similar problem or knows how to fix this.  All engines run fine traveling from the forked part (two rails) of the switch to the single rail.   Hope this explanation makes sense.   .   

Was given a set of Centennial Amtrak trains.  Set has a diesel / electric engine marked Amtrak 951.  Each truck has six wheels.  With my turnouts set to straight there  is a tendency for the front wheel truck to pass correctly over a turnout going straight but the back wheel truck to derail trying to turn inward even though the turnout is set for straight.  If I turn the engine around the front wheel truck will try to turn inward even though the turn out is set for straight.  I have five other engines all with four wheel trucks that have no problem on the turnouts.  Has anyone else encountered this problem and was there a fix?  Previous information from this site was very helpful.  Hope you guys can do it again.  Thanks.       

Very basic question but I'm new to N scale.   I want to mount E-Z track to layout board.  I notice that the track has holes but the grey plastic underbed does not.  Do you nail through the plastic or drill?  What's the best way of mounting?