MattR posted:ROGER1 posted:There could be another issue lurking here. That engine does not have rollers, it has sliding shoes which can be a real PITA over switches and UCS tracks if they are worn or maladjusted. If they are grooved out, I'd replace them and at the very least, bend them upwards a bit to make better contact with the track.
Depends which version he has.
We have the 2-6-4 version with rollers.
when I took the shell off, I did not disassemble the train enough to see all of the gears, nor did I specifically oil or grease the parts. I did oil the axles and the side rods (pardon me if the terminology isn't correct). Will try oiling and greasing the armatures (will need to locate them) and the gears.