Tightening the pan gasket really isn't related. Bruno prolly threw that in "just 'cause", but wouldn't hurt to give each bolt another 1/8 turn if it shows signs of leaking. I don't have a torque spec handy but it's pretty low, on the order of 7 ft-lbs.
Here's another slant on adjusting the valves:
http://www.nmia.com/~dgnrg/page_5.htm
No telling if yours might have the new spraybar banjo bolts in it until you take the cover off. I had nothing but trouble with mine loosening & Loctite didn't help so I cross-drilled the heads and put safety wire thru them -- problem solved! The new factory "fix" is to supply bolts with a patch of nylon Tuf-Lok on them, but that's no guarantee they'll stay tight. The new bolts will be instantly recognized by having a recessed circular groove in the tops of the bolt head, the old style is completely flat.
Shameless plug: I just happen to stock the new style banjo bolts and sell them for a token little more than what they'd cost you at the dealer & include new seal washers and pre-drill them for safety wire:
http://www.nmia.com/~dgnrg/banjo.htm
As for the gasket, yes, install it dry without any sealant. I usually get 2 uses out of it before it starts weeping oil.