I have 2, 2004 era K line engines with tmcc both have dual can motors. Run well, too well. By the time I am at 12 of 32 steps, they are ready to fly off the track. The heavier one if it has a few cars can run slow, but the lighter one at step 1 is running too fast to do a coupler connect without derailing everything.
Can I convert these motors in serial to slow them down? Anything I should check for? Is there any other speed adjustment that can be done?