Thank you very much for your directions. I just went out and used your technique and it worked like you described. Yes one of the rivets jumped up and fell to the ground. Luckily it did not hide somewhere. The reason I was going to remove the cover was I smelled oil burning when I took it out after it's winter sleep. I see now there is an oil film on the driver's side cam cover. It is not leaking down the side of the block. It almost looks like condensation dampness. I guess I will wash the engine when it gets warm again since It has gone from 80 degrees to 27 tonight. I wonder if it could be a PCV valve stuck. It is especially oily around the filler tube. Thanks again for your advise and help. It was much appreciated.