New t-stat, where to put the probe?

[snakesRkewl]

But if i put it right at the source, under the substrate, and says its 95, the top of the sub will be abit afew degrees less wont it?

T-stat probes NEVER go inside the enclosure if it's controlling a UTH under the tank.
If the snake moves it you get fried snake, not good.
Tape the t-stat probe under the enclosure against the UTH.
It doesn't matter what the t-stat reads, only what the thermometer reads off the probe that is UNDER the substrate.