Done so far:
Prop clean
Hull clean
Thru-hull clean & clear
Strainer clean
Hoses apart and clean
Rebuilt pump with new impeller
Heat exchanger clean and shiny
New thermostat (tested)
Flushed coolant Came out clean
New radiator cap (tested)
Added coolant resevour

I am interested in mickey's bypass he has for the water heater and how it is
plumbed. I think I want to be able to isolate the water heater anyway.

Next: Exhaust manifold to talepipe comes out.

Thanks again - Allen