I have several MTH locos and few RailKing that perform without a hitch passing through the accessory section, but my GP-38s and GP-40s will get stuck at slow speeds. At through-freight speed, they kind of blip and keep on going but at switching speeds, they die out. If I move an inch or 2 either direction by hand, they will fire back up. Any ideas??
The accessory section is triggering an 18VAC relay for signals, which works rather well. I'd hate to give up on it.