I've noticed a persistant problem with my small blocks: They run hot. With a 160 themostat, headers, in mild temps-200 degrees at idle. I've got the 7 blade fan on this time, stock engine with plenty of miles, shroud is in place, timing's at 10 initial, new stock radiator, new hoses-with spring. All the right stuff. I'm going to even replace the exhaust-what am I missing?o No: