[yoh!!!]

Yes, I will not use a headgasket since I remember that people on this board discussed that it causes difficulties. I think this is what might have caused the head problems on my engine when I bought it...
... Head work was done. The sealing surface was mildly cut, probably for the first time. I meassured 58ccm volume in the combustion chamber and another 2ccm in the piston (K&S Euro Spec)
Deck height... I think under 0.05 might not be a good idea. And I would not know where to get better gas than the 93 Octan...