Well I'm pretty sure its not an airlock and that it's not really getting up to 250*F. Datamaster says its at 209*F at its hottest point.
Another thing I noticed today was that the guage went up slower that it was before, so maybe there was an airlock before causing it to shoot up really fast? I ordered the sending unit today so I should get it by Tuesday. I throw that in and see what happens.
Its running pretty good otherwise! Got some tuning to do though!
Guy