Well today i had a ball ,went and got some 110 octane leaded racing fuel to put in the honda , love that smell of burning race gas . Motor also seem more responsive . I know what ones are thinking you don't need it , well yes i do its at least 12.5 or higher compression . 14cc head , flat top , .009 head gasket . and some hillbilly milling on a slab of marble and 120 grit stick on pad , not sure how much got taken off but the motor makes some noise .