loco mechanic needed

[loggerhead]

Looking for a good locomotive mechanic, I have a Kato BR 86 that I've kitbashed for my logging layout, the thing doesn't run worth a darn, any tips. I've lubed it, cleaned wheels, put on metal wipers, with no luck. It just stutters about the track. Secondly, anyone ever re-motered a bachman 0-4-0? what motor did you use and where did you get it.
thanks.

 

[Cogent]

I had an engine where the coal tender supplied the current to the engine. The contacts between the tender and the engine were loose and caused a stuttering. Perhaps you have a loose connection internally.