Hey everybody, only been a member a few days and I'm sure glad I found this site, what a community of awesome bikers. I'm sure you've had this question a zillion times but I gotta ask. I put a set of short shot pipes on 05 1200c 11 months ago and never had a problem with performance, not a pop. The other week it started to pop and backfire like crazy. I changed the plugs they had some carbon build up and the air filter(that was wet with gas) I noticed alot of varnish so I started using Mystery oil figuring the jets may be a little clogged. I've only run a half a tank but it seems to be responding better. Should I continue with the Mystery oil or am I just blowing smoke. Any help would be greatly appreciated, thanks.