hers yout onfo on the head gasketRegarding the deck height, my acquiantance didn't know specifically, but they have run no gasket (silicone sealer instead) and had no problems until they competed on one-mile ovals (he's a flat-tracker). He said there was some evidence of piston-to-head contact when they tore the engine down after a race. He surmises that @ the continued max rpms they run at, they experienced some rod stretch. He thought there would be no problem for "normal" competition.
I bought a DRZ "E" gasket and it measures .015" (about half the thickness of ours). According to my calculations, no gasket should put you near 13:1. That's probably too high for pump gas, BTW.[/b]