Well the permatex did not work plug came out before i left the bench. Just ordered a $40 recoil kit wish me luck going to take 10 days to get here did not run long enough to see if the permatex helped with the muffler coming loose i guess we will see in a few weeks. This engine is under warranty but i would rather try to fix it than send it in. But if this does not work i will request a new head if they will not send me one then i will send in the engine unhappy with the engine and the company who sold it.