So i'm changing valve cover gasket and filter adapter o-rings anything else I should do while i'm at it? How does the top end look good or bad I don't know what to look for. ">
take a look at your valve guide seals. the black rubber part around the valve stem. if they look cracked or broken replace them. i just did that to mine and it cured the oil burning problem i had. 9 of the 12 were literally in 2 pieces.