Reply to "Does MTH make a dual pivoting pickup roller on a single mount arm for their engines?"

I find it hard to believe that an E-8 would lose power on a turnout or crossover.  The roller pickups are spaced pretty far apart. 

I would check continuity between the pickups.  Also check continuity between the front solid wheels and the rear solid wheels.  If not close to zero, check the ground screw connection on each truck.  The black oxide coating on the screws is notorious for high resistance connections when they loosen.  Tightening them helps, but I usually remove them and file under the head where it makes contact with the ring terminal.  Poor grounding of the trucks is usually the culprit when this problem occurs.