Just wanted to let you guys know. I performed my own lapping service. I feel more comfortable doing my own, and my shop still does not have much info. on this bulletin. The proper Loctite 648 is very hard to find. This guy has it and is very credible, nice,cheap,and prompt. http://home.rochester.rr.com/thunderboyz/ You can have it in two days for less than half of what normal loctite costs at an auto parts store. This is a retaining compound made for mating cylindrical parts in high temp. applications with oil present. You can check it out on loctite.com. Just check the online store or call him. Hope this helps.