Fettled Arch's trailer coupling.
She tried it today and the clamp part wouldn't grip the chain stay. The handle part had run out of threads and wouldn't close the clamp any further. Also the clamp had lost its rubber facing and so it was metal on paint.
We added a bit of tyre rubber and set off to deliver a vice (metal clamping gripping thing, not alternative source of income).
I then added some washers under the handle to extend the useful threads and it gripped better for the return ride.
Back at base I dismantled the clamp and added some inner tube to the jaws to soften the faces and then greased the moving parts.
On reassembly I found the safety strap had a twist in it. Took it apart and refitted without the twist.
Then noticed the attachment bolt looked upside down, nut on top. Dismantled and reversed the bolt and reassembled.
Then noticed the whole clamp was upside down and the bolt was right the first time!
Dismantled again and turned the clamp over so the handle was now back on the top and reassembled.
The dismantled again to replace the grease that got wiped off from the previous refettling and reassembled.
'tis done now and looks good.
Must make note of orientation of folded draw bar and trailer chassis, when next working on it crouched in the corner of the hall floor, before dismantling.
I miss working in my own workshop!