I went round and round with overheating issues last season and i thought i had corrected the problem ie, cleaning out the inner cooler and the heat exchanger, changing the air filter, new belts etc. But now this year I'm running hot again, around 200 deg. I pulled the exhaust elbow and found it has perferations between the air and water channels. can this cause overheating even though it is downstream from the engine ie, on its way to the exhaust, people have told me it can cause overheating. Can anyone tell me if they have had any experience with this issue? Anyone with expert advise? Anyone having the same problem. Desperate here and dead in the slip till i can correct this problem.