Hi. Hoping others with my boat can give me guidance. I have changed almost everything in my cooling system on my 32 and my boat runs hot. I have the marine power 5.7s in the boat. I have addressed the following. 1. New Risers and manifolds 2. New intake hoses through the entire system. 3. Impellars 4. Exhaust hoses. 5. Compression check. All good. 6. Thermostats 7. Water pumps 8. Cleaned the heat exchanger. Barnacle busted and soaked closed side. Still runs hot when I go above 3500 RPMs. Gets to 200+ And if I run it long it will hit limp mode. Does anyone have this issue? Mechanic believes that the engines are undersized for the boat, but I have a hard time believing it. Hence. I am asking others who own one. Thanks.