Can anyone suggest a suitable replacement motor for a newer 4-8-4 Northern?  This is one of the newer 4-8-4's made around 2012.  It is not the newest (2015) with the can motor.  Mine has the open frame motor, but that is not important if I can find a replacement that will fit - L=20.8mm, W=14.6mm, H=9.85mm, overall length from back to front tip of shaft=33.9mm.  I can mill the frame some if necessary, but would prefer not to do so.  However, that is not a "deal breaker" as I really would like to get this loco running again - it is being converted to DCC with sound and "keep alive".  I have done a lot of detailed weathering to loco and tender.  I also made modifications to the tender to create additional electrical pickups.  So, I'm anxious to get it back on the rails.

Also, any tips about reinstalling the drive wheel assembly to avoid binding or other problems would be greatly appreciated.

Thanks in advance for your help.

Rusty Rails