Thanks for everybody's replies. The first time I installed the cover I torqued to about 7 lb-ft. My book says 1.0 kg-m or 7.2 lbs-ft or 84 lbs-in. That didn't work. I will inspect the cover again for warpage. The best luck I had was to lather up both the top and bottom of the gasket with RTV. But what a pain to clean off when removing to set the valves. I did install a new cam seal when I replaced the head. The leak appears to be coming from the front of the motor, maybe around the semi-circle in the front of the cover, but its hard to tell. I did notice that the casting date inside the cover was 93 or so (can't remember these days <img src="/forums/images/graemlins/sleeping.gif" alt="" />), so maybe the cover was replaced earlier before I bought. Anybody know of any difference in the covers from 89 thru 93?