Sorted my 320/1. Ripped off the couplings and fitted standard rapido couplings. Now they run sweet. (No head tail lights function, DC).
I think this is a good platform to raise issue and find out about issues. Its a huge plethora of useful content to go back to. Maybe in a few years time too. I'm one of those that doesn't have an up and running layout at the moment and it could be some years before I do. Therefore my products will be long out of warranty and I have no ideas how to fix some of the problems highlighted here. So sites like this are invaluable. I don't do social media.
I emailed my poor models to the email address supplied in the instructions and never got a reply back. So hence I sorted the issue myself. It was that or put them on EBay at a loss.
But still the worse models.
Dapol the worst for blowing head and tail lights. You know if they derail thats a blown a component on the PCB.
Farish; I can't fault them I'm afraid. Except of course the dreaded fractured gears that still hasn't gone away but are much better now. But only ever had one model.overy 40 years that I should have returned. The latest blue ribbon class31 that runs so slowly. (Yes I did try and run it in).