I have been messing around with my new rack for awhile now and just can't get the right temps. It has three tubs one piece of heat wired through to my helix. I have it set at 95 degrees. My top tub is 84 max, Middle 88 max, Bottom 92 from my three flunker thermos and from my digital max 95. What should i do the probe for the helix is right on the heat tape.