I have the same problem in my opinion but my mechanic doesn't seem to think so. It runs anywhere from 90-102 on a reg basis. Motor runs like a champ but I can't get the heat down & I have a drilled t stat, LIM job done, new waterpump, new elbows, new rad cap, new rad hoses, coolant flushed about 4 times & a rad that came out of a car that ran perfectly fine.
Are you losing coolant? Any milky residue on underside of valve cover cap?