Went to go to replace my cam with a stage 1 hotcam and noticed one of the long valve cover bolts on the right side is stripped out as in no threads at all in the back right side cylinder. Would that cause my bike to suck air in? Reason I ask is after tearing into my 400ex I noticed it has a 11:1 86mm wiseco piston and seems to have an aftermarket cam cause it doesn’t have the decompression mechanism and my buddy who has a stock 07 400ex blows by me at top speed. Has anyone helicoiled those bolts and worked? Or is it necessary to fix it since the 4 head bolts hold the head down. Thanks