2ba threaded bush

[Parazine]

I thought that the capping used screws that went through the capping and skin straight into the wood, or have I lost my marbles?

Correct, they were either No8 or No6 woodscrews. Usually the wood is naff by now; plastic plugs work well in lieu of new ash/beech.

Tony, only the late AD Chummy body ('28 onwards) has the interlocking "fastening", earlier models have nothing (except doors that fly open sporadically). Very early cars had a nice hoop type catch that positively held the door in place.

[Tony Griffiths]

If the wood is sound, apart from "worn-out" screw holes, I find that one of the new, slightly larger matches works well as a plug - especially if carefully dipped in wood glue and worked up and down a little and then cut off. Let it dry and then use a bradawl to start the hole. The screws on my  '30 car were originally the chrome-plated, domed-headed, countersunk type like these from Wollies. https://www.woolies-trim.co.uk/c-338-woodscrews