Traction Issues with Old Style Plarail James

[Super]

Hi T-Blue

First I have to say that I don't have any Revolution track to speak personally but I have discussed and viewed many videos on the subject of original trains running on those tracks. But you say you are having the same issue with James on Tomy tracks so I will go with that. There are a few questions and suggestions I have...

Are the traction rubbers in good condition with no wear?
Do they stand proud of the plastic wheel?

You may want to try running James with a AA battery in the tender to 'lighten the load' to see if that helps. If you have any of the round soft packing peanuts around will help keep the AA in place (see picture) or use a 'C' to 'AA' adapter.