[pHaestus]

OK I am officially dumb. I spent about 30 minutes looking at my test system this evening and FINALLY realized that the probes aren't all configured the same way that they used to be. When I replumbed everything to get the wb inlet and outlet probes closer to the waterblock, I must have moved one of the matched set of thermistors around because that probe is now between the pump outlet and the radiator inlet. I have a fourth probe that wasn't in use that is brand new. It reads 0.02C higher than the probe I have in the inlet. What I'll do tonight is run a flow test with and without PC running. This will give me the offset over the whole range and should be able to verify that this was the problem with the earlier data.

I am JUST smart enough to be dangerous