I've had a reoccurring overheating issue at high speeds on a 1996 Evinrude e90tleda. So far I have replaced the thermostats and poppit valves, impeller and housing, and the water deflectors. I am getting good water flow out of the tell-tale since replacing the waterpump. I ran it on muffs for a few minutes after replacing the deflectors to test for leaks and there were none. What concerns me is that the tell-tale stream gets pretty warm now. It has always been cool before. Is this normal or is there something else I should look into? Any ideas or suggestions would be appreciated.