Quote Originally Posted by SteveKen View Post
I assume that you are going to use a new replacement when you re-install it? Check to see that the accompanying stud is inserted far enough. If too much of it is sticking out, then it could be hindering the amount of bite you have on the inner hex. I've also seen replacement nuts that look like long shafts so that the hex is outside of the manifold. I might have some lying around here somewhere....
Hah. You assume correctly sir. I've ordered the newer longer manifold fasteners that fit the manifold recesses as per the suggestion of @GreggPDX earlier in the thread. They should arrive tomorrow.