or when adjusting.. i was stuck on cylinder 3's exhaust because i could not get the wrench to slip onto the nut to adjust it no matter how hard i tried.. a good set of wrenches for adjusting would have to be about 3" long with the ability to attach the stupid angled piece on for loosening and use the 3" for fitting into the tight spaces..i need to make some wrenches like that and see how they work