I've also found it is easier to place the tap in a vise & thread the lca on it. Lawrence ps- this info came from my 1962 service manual.[/QUOTE] VDART That's a good idea. I never though of that, doing it that way. I'm going to have to give that a try one of these days. You taught me something new today. Ya, screwing a 1 3/8 tap into that bushing shell does require some "muscle" in getting it to bite into the shell, but i have some heavy duty 3/4 inch drive ratchet, and breaker bar tools, and sockets, in the bottom drawer of the tool box.