Jim, what do you mean "solid fan"? I switched to a 7 blade from an incorrect 5, and it seems to be worse by a tad? I don't overheat, but I dump when the engine is turned off on a hot day. It's not too much dumping but it's more than I care to clean up off the garage floor.
I wonder what's up.
Sounds like you have an incorrect PSI rad cap. A correct cap is 14-17 PSI.