Hi Comp piston 450

Hi just wonderin if you guys have any experaince with hi comp pistons on your big bore thumpers? i've got a husky tc450 (not a yam i know!) and i need to change the head gasket, but its done a few hours and i was wondering if a high comp piston would be a better replacement than the stock 1?? do they have any reliability issue's? and do i need a special head gasket due to there being more compression?? also will it run on standard fuel? Any help from you guys will be great as i have to tackle the problem pretty soon!! Cheers Guys

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