273 302 318 340 build

So dbl checked my piston height to be sure. I get .034" outta the hole. So with the new head gasket I mentioned above being 0.0345" thick, does that essentially put me at zero deck? Piston to valve problems ?
Here' values I used on UEM pistons site for calculations.
Cyl bore 4.07"
Stroke 3.31"
Rod length 6.123
Head gasket thk .034"
Head gasket bore dia (I ball parked at 4.100"??) Suggestions?
Cyl head volume 70cc
Valve relief 8cc
Piston sits .034" outta the hole.
I get 10.04 Compression and 7.20 Dynamic.
Seem about right? I think I'm maxed as far as I wanna go with compression with today' gas.
Anyone see issues with piston to valve?
Also head gasket suggestions? Or help id'ing the new black ones?
Thanks
Steve

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