hi I have built a new layout and all my hornby steam trains refuse to do a full circuit , I have 2 class 37s and a class 66 not hornby they go round perfect, my steam train problem is stop start then come to a curve and the front bogies on the mallard just do not turn and derails the train, it’s a brand new train , don’t know why my flying Scotsman does exactly the same comes to a curbe straight on and you guessed it derailed, my virgin pen tool goes round half way and then comes to a stop and the driving wheels are spinning, more problems than I can cope with. Now my central dmug sometimes works you can hear the motor trying to work l a humming sound as though it’s got a jammed motor, has anyone got some clues, if not they are going in the bin
