Just took my '02 Giant AC1 into the local bike shop to get the rear shock replaced as the original Rock Shox pro-deluxe blew out. I returned to the shop to find it has been replaced with a ARIO 3.2 fitted. It is an air shock which is different from the original spring shock but the shop insists it the correct replacement for the bike. Does anyone have any idea if this is correct or not? Just about to go for a ride on it but am pretty sure something heavier duty is required. Any info would be appreciated, or if someone knows where the is a prodeluxe sitting around doing nothing hmmm?