As I was going through checking valve clearances, I reached the step where i needed to remove the camshaft caps. So these bolts were way tight. It was a struggle gettting each off. They are hex shaped heads so they were getting kinda stripped after I got each off. I had 3 more to go and then one was way tighter than the rest and was kinda stripped. So now I have a stripped bolt that I really dont know what to do about. If I drill it out, crap could get into the engine. anybody have a suggestion?