Hello, a bit of an update. Now stripped and have found the following, cocking link has 2 pivots both were tight to pivot, the slot in the piston was roughly finished with lumps and craters. There are scores on the pop up breach. Chunk out of the piston seal.
Everything was bone dry with no sign of Any lubrication.
Cant wait for the Tinbum kit to arrive.
Must say that Nick's service was exceptional.
Cheers.
Geoff.