Fitting valve cover gaskets

[Knapdog]

I've just checked the valve clearances.  They were all a bit tight.
I've purchased two new gaskets.
What's the procedure for fitting these?
On a AI search it said to just put gasket sealant on the corners/half moons of the cylinder head.  
Whenever I've fitted gaskets in the past I've always put gaskets sealant thinly the cylinder head side so the gaskets sticks and a thin coating of grease on the cover side so that I can always easily remove the cover.
Any thoughts?

[sandy]

I suspect you mean valve cover gaskets, not cylinder head. After 3 valks and helping others, I’ve never put a sealer on the gaskets. But it probably wouldn’t hurt.

[Knapdog]

I suspect you mean valve cover gaskets, not cylinder head. After 3 valks and helping others, I’ve never put a sealer on the gaskets. But it probably wouldn’t hurt.

Thanks for that, plus, thread title amended.

[Chrisj CMA]

No sealant other than on those corner landings. I will say if ALL the tappets seemed a little tight that is suspicious. Before adjusting them I would recommend double checking you are using the right gauge 6 or 9 thousands and your technique is sound. I’ve never needed to tweak more than 3 or 4. Also if a large adjustment is needed, that is suspect also. Make sure you’re on the “right” TDC