Well after the lack of progress I was making on the tank, I convinced the owner to let me pull it and have it boiled out.
Damn, there are a lot of bolts holding that thing in. I didn't see any reason to pull the windshield as Les Andrews book indicates. Worked for me to just tip it out all the way.
Should have it back at the end of the week.
Now to the cooling system.
Water pump has about an 1/8" of endplay. He has one on the way so I will be flushing out the engine tomorrow.
I'm worn out.