D&L Airgun would be worth a try.
Pretty sure pabirdman could set you up, too.
Or you could mail order from the US. About half a dozen suppliers down there that will sell you a rebuild kit.
All else fails, you can order direct from Crosman, or their Canadian parts and service outfit in Quebec (IIRC).
Got the book of words 'n pictures off the Crosman site? Worth having.
Cheers
Trev




























