ok here is the deal.... i got a 94 civic hatch, d16z6,p28..... i have already changed the headgasket twice, first cuz it had an exterior oil leak, and then i had to redo it cuz i caught water in the oil and i cant get it to stop mixing coolant and oil!!!!! when i open the rad cap i see constant bubbles (from combustion) . where do i go from here??? i have no idea what to do.....