Does anybody know where I can find spare parts for Canon lenses. The chaps in East London just shrug the shoulders and say buy a new lens.

I disassembled the 18-55 EF after repeated err99 and found that the printed strip that communicates with the diaphragm is snapped where it should bend to accomodate focus and zoom movement. Fixing these PCB flex strips is virtually impossible as the copper lines are only a hair thick.