I had to change over the 50mm's for my MoT, the attached pic shows the bottom spacer. On mine the screw thread had been chewed to hell. So i encouraged it to move round with a small tuning device (hammer). All went well, until re-installing the 50mm's, whilst tapping it back round it exploded into many pieces
So i'm after a replacement, anyone know where i can get one, and rough price. May take a trip to Louigi's, but if i can save a journey for such a small thing and a pathetic problem for Richie..
any help appreciated
Steve