last race my 06 yz450f overheated due to losing all my coolant. I got the bike started for a bit and then shut it down and pushed it out of the woods. when i put new fluid in the radiator it all leaked out where the radiator hose goes into the head. I just got a new o-ring for that fitting and am concerned that i may have done damage to the head. Anything else i should worry about or just replace the o-ring put fluid in and ride?