I have Gargraves 042 switches and have been using them with MTH engines and have some really big problems. The, MTH PS-2, 4-8-4 Reading Lines T-1 steam loco derails at almost every Gargraves 042 switch I have, I have shimmed the switches underneath to get proper level. There is just something about the MTH RDG T-1 and Gargraves switches that don't work for me.
Williams engines have no problems with Gargraves switches, even three Williams SD-45's lashed up together will go through the Gargraves switches.
Like others mention about the Gargraves switches, be sure you have power going out of all center rails; coming and going back out, as sometimes the power stops at the center rail that is cut for the frog area. Gargraves sells power clips that you insert under the track, sometimes a small flat-tip screwdriver is needed to open the track just a little to insert the power clip. Use two power clips on either side of the switch amd at the curved side to prevent this from cutting off the center rail power.
Lee F.
