So I've been having the same problem whether I'm running my F2 thruster pipe or stock exhaust. I barely ride like a half mile down the street and the bolts start coming loose and oil starts spitting out the exhaust. I think as a a result some oil got on the threads in the hole so that's my suspision thats why the bolts dont stay tight? I don't want to overtighten the bolts and risk stripping the threads in the holes. I would use loctite but I'm affraid if I do and say I need to change out the gasket I wont be able to remove the bolts in that case. What should I do? Has anyone had the same problem? I don't want to have to buy a new cylinder just because of this. Please help!