After reading many threads about plugs burning up,and seeing some pictures of some really toasted plugs.What happens to the pieces of plug that get burnt?Doesnt it score the cylinder walls and mess up compression?I see many people after pulling burnt plugs and just putting in new ones.Whats the deal with that?Also ive seen many stock plugs which looked fine on high boost.Why not just keep them in and pull back some timing if predetination occurs?Would apreciate feedback.Thanx