I appreciate all the replies to this question, but I actually made this post last June, the issues were thoroughly covered, and today apparently Donald Laverick accidentally reposted it.
There's been a lot of water under the bridge since then, and the stud's been replaced, the engine rebuilt, and heads replaced with some single plug heads...which I've decided will work for me. Thanks for all the replies, however. Maybe somebody else will learn something from them... Mark Langford ML at N56ML.com http://www.n56ml.com
