Quote Originally Posted by silva View Post
Yes its interesting opening up these old beauties. Just done one now I had been saving up as a Christmas treat - action has been soaking in diesel for a day or so. Piston washer had detached and turned into a coal like, compacted black layer wedged in end of cylinder.
The best fitting BSA replacement piston washers have been made by my club mate Paul O'Donnell. They fit perfectly and luckily I stocked up on a few before lockdown, so have replacements to hand that I know will fit if they are required.

John