I recently picked up a nice looking SW-8 in Penn Central livery. The engine is really nice and in good condition. It has the loco-sound system installed.
I'm having trouble with the engine running smoothly over my 027 switches (5121,22). The engine will briefly loose power and hesitate while on the switch. The power cut is not enough to drop the board into neutral.
I've tried removing traction tires in various configs but nothing improves this condition. I checked both pick ups and they are both pulling power from the rails.
The engine runs fine on track without turnouts.
Any advice out there?