This is the controller but I think I'm going to need a new one because this only looks like 0.5A and if so would that explain why it like doesn't work and then randomly moves about 1-2mm
I recently got my hands on a Dapol 0 gauge class 121 and now have some track, i have some old Hornby DC controllers lying around so if I used an electrical connector between that and the power rail would it work OK?