So I ended up removing the circuit board.  Works fine now!!!!

Thanks for all the comments.  I'll try some of these fixes. 

So I have a couple N-Scale 2-8-0s.  They run fine when the old "non-dcc" ready tenders (the one piece version).  Bought a couple of the new dcc-ready type with the removable bodies and my engines all run sluggish and stop.  Why is this?