Spooks how yes the wheels are in gauge.
Plas man thats probably a better idea then trying to machine the flanges off the wheels.
But can you  clarify which set your referring to?  The lead wheelset of each truck or the last wheelset?

Good afternoon - my first post
I have a Bachmann DD40X Centennial. It is a good running engine. When I am running this engine on our clubs layout (both permanent and traveling layouts) it jumps the track at certain curves. I believe the both layouts have 14" radius curves. We've run big boys, challengers and cab forwards over the same track without any issues. So asking the club to adjust the track work would be a no go. Is there any adjustment that can be made to the Centennial? I'm thinking making the inside pair of the front and rear trucks flangeless. Any thoughts on this?