After I'd unboxed a new Graham Farish 4MT (372-653) this weekend, I discovered a very small part stuck to my hand. I've looked at the loco, but I can't see anything missing.
(https://www.ngaugeforum.co.uk/SMFN/gallery/82/4156-300919213917.jpeg) (https://www.ngaugeforum.co.uk/SMFN/index.php?action=gallery;sa=view&id=82201)
This little loop of wire is maybe 3mm in radius/5-6mm across, with a 90 degree bend at each end.
Does anyone recognise this as part of the loco?