So my TR280i is losing coolant and it certainly seems to be going out the exhaust. Beside the fog out of the exhaust, it also smells of coolant. I started to pull things apart and when i removed the exhaust pipe there was a trace of coolant in the pipe. When i removed the cylinder head, the o-ring still seems good. Obviously i will be replacing them, but is there anything else i should be checking before I put it back together? Thanks for any tips.