Art....I read your posts and the replies...these over heating issues are annoying, aren't they? The thing that puzzles me, with the jetting, is that my plugs looked like they were burning really well....never had white electrodes. A lot of people say it's almost impossible to judge plugs if you're using msd ignition, which I am. I have already bumped my jets up from 96's to 100's. That should tell me something. I can't test it until Friday test / tune.