YEAH I'M REPLACING THE O2 ANYWAY.I KNOW THERE ISN'T A CRACK BECAUSE THE MOTOR WAS LEAKING WHEN I GOT IT BECAUSE THE LACK OF A GASKET (VENUS-AUTO

) SO WE CHECKED IT AND RTV'D IT, IT PROBABLY DIDN'T SEAL RIGHT. YEAH I KNOW THE HARD START COULD BE FROM THE LEAKING COOLANT BUT I HAVE THE FEELING THAT IT COULD BE MORE NOW.