thank you I have a 2-6-0 loco echo valley express dcc set that i add to the 4x8 layout it is 12' feet long it ran ok before glue down of track it now will run on curves but don't want to run on straight a ways I have cleaned the track and wheels on the coal tender where it picks up its power and still doesn't want to run right it runs on dc better than on dcc I tightened all jointers in the track to any suggestions thanks