A lot of people overtighten valve covers and oil pans. The nut driver suggestion is a good one. I prefer "glued" the black ultra seal gaskets to the valve cover with Permatex Ultra-seal after straightening the valvecover metal, especially around the holes. I then coat the side that touches the head with a wet coat of motor oil and tighten evenly with a speed wrench taking care not to over tighten. I check the bolts occasionally and keep them snug.
1970 Plymouth 'Cuda #'s 440-6(block in storage)currently 493" 6 pack, Shaker, 5 speed Passon, 4.10's
1968 Plymouth Barracuda Convertible 408 Magnum EFI with 4 speed automatic overdrive, 3800 stall lock-up converter and 4.30's (closest thing to an automatic 5 speed going)
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