[Lynn Eades]

Hi Phillip. Here's what I had suggested to me. Don't run a tap through those head stud threads in the block. Find the best looking old stud (thread wise) Then put a couple of hacksaw cuts in the end or grind a notch in it, so that it forms a sharp scraping edge as it is wound in. then judiciously use it as a thread cleaner in all 24 holes. the idea here is that you will not take any meat out of the block and your new "rolled" threaded studs will fit fairly neatly. Then when you "set" your new studs in with a good sealer, you should have little trouble with leaks.