Just recently I have a loco that has started to trip out the overload cut-out. My problem is that I have tried everything to find out what's causing it but without success. The loco runs for 3 minutes and trips the controller out. The problem is that no other loco does it, and, here's the problem, it only does it on the outer track and runs perfectly on the inner track. I have renewed sections of track, swapped over the control units and it still trips the other unit, checked the wiring in the loco, and nothing makes any difference! So it's not the control units because both trip out when used on the outer track, not the loco because it runs perfectly on the inner track, and not the track as every other loco runs perfectly. I am at a loss now and can't see what it can be. Anyone any ideas? Answers on a postcard please!!