I bought a brand new VE-300 straight from Reptile Basics and when I got it the historical low temps were all over the place even though I had it set to 88F with a night drop of zero degrees. At one point it said the low temp was 45F! I put another temp probe at the same location on the heat strip that measured high and low temps and it said that the temps were not varying more than plus / minus two degrees. I complained about it and Reptile Basics sent me a different VE-300. But now my new VE-300 is doing the same thing, last night it showed a low temp of 75F but my other probe said the low was 86F. Anyone else have this problem?