This is great feedback - I will switch over to the tel-pro cork - just hope I can get a fit as even when I went slow on the last gasket, it still leaked. .
Just to add - I changed the valve covers on my 69 Chrysler 300 and I seemed to have burned them up. . and leaking bad!
got them from Summit - Valve Cover Gaskets at Summit Racing
Any suggestions on the proper gaskets to get????