Trying to get some info on replacement gears/wheelset for the Bachmann Plus F7 Going by the photo on their parts site, the gears on the replacement wheels are the same material as the original gears that develop cracks. Is this the actual case or are the replacement gears made of better plastic? The Bachmann board has been little help so far. I know about the NWSL wheelsets, but they cost more than the locomotives. Hoping I can find out before I spend the money to replace 8 wheel sets.