NSR base gaskets are single piece, stock is 0.5mm, HRC do 0.4's and 0.6's as well.
Head gaskets are just head gaskets, I've got a used one here, it mic's up at 0.3mm.
Stock squish is always within 0.1mm of 1.2mm.
So we can see no matter what you do you'll never get piston/head contact and your barrels are too short for stock pistons by over 1mm.
Clearly your barrels are butchered to hell or not intended to be run with standard NSR pistons. That's why Matt wants a clear pic, so he can see what they are.
But possibily of more importance to you right now is to realise that without quite a hefty amount of work (or just running multiple base gaskets) you'll struggle to get both the squish and the head volume right.
When you get the barrels back measure how tall they are.
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