Looking for some Tips and Suggestions on successfully replacing Cover Gaskets. Never seem to do it well. I have to replace mine after I get the Oil to Rockers restricted. Cast Aluminum T-Bird Covers. I clean off old Gasket with Putty Knife and clean residue with Wire Brush on Drill. Attach new Gaskets with Black RTV and Cloths Pins until RTV Sets. What else do you Guys do? Using Wing Nuts to retain Covers .How tight should I be compressing Gaskets? What else can I do so they don't Leak?  Thanks for input. I would really like to get this Engine Drip Free.