So, I've got less than 500 miles on my freshly rebuilt 59A-B flathead. .040 over, Merc 4" stroke crank, Isky Max-1, dual Stromberg 97s w/.041 jets, 180 thermostats, shrouded electric fan with 185 switch, 4# cap, dipped radiator. Before yesterday, it had been staying around that 185 mark, even in...