205 is not a problem. Modern cars run that hot normally. You can run 210 and still be good. When you had the 2400 stall, it was tighter and didn't "slip" the transmission. This is why your temps are higher now. You can try adding "water wetter" or some of the other cooling system additives. These can drop up to 10* off your temp. BTW, do you have an external trans cooler? If not, you may want to add 1. It'll help.