Sealing up valve covers

Had to write a update.... Oil leaky valve covers are no more!!!!!! I am still in shock and really cant believe that 99% of valve cover leaks were through the hold down bolts ....... but shear determination plus expert help and Permatex right stuff did the trick. The biggest thing I see now oil seeping from heat etc.... is the factory rubber plug in the valve cover. I have another set of factory 360 valve covers I was going to dig out and just see how easy that plug is to remove, clean up and get some right stuff on the plug and reinstall getting all the oil seeping stopped. I noticed yesterday that due to the cooling fan constantly moving the seeping oil down the side of the valve cover towards the Left rear of the engine dripping off on the starter.
A big shout out to everyone who chimed in on repair procedures. THANKS, THANKS, THANKS. Texas Red