Ok now i feel stupid

[ARBallMorphs]

Try swapping around the tubs a bit if you want less of a temperature range - exchange one that reads 89/90 with one at 93/94, and see if that makes a difference. Sometimes variations in the heat tape combined with the shape of the tub can cause a wide difference in the temperatures.

Hey, never thought of that, i will try that when i get home from work, thanks