I recently bought a '97 900SS from an individual that didn't ride very much. I got it running, thanks to Sea Foam and fresh gas. However, it seems to run very rich. I took the tank and airbox out so I could see the carbs. I noticed the air cut-off valve cover was busted and the spring was missing. With the ACV not working, would that be the cause of the rich mixture? Where can I get an ACV cover? I enjoy working on things, but I have to have parts.