Here are the results from my recent top end overhaul. I had the cylinder replated to A specs. and a Vertex piston. I used one green base gasket that measured at 0.5MM. I did not take any precise measurements after assembly but, at TDC the top of the piston was approx. 1.5-2MM below the top of the cylinder. At BDC the top of the piston extended about 1-2MM above the lower opening of the middle exhaust port.
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