Length of flexwatt?

I have one peace of flexwatt that is normal length, and one that a little bit shorter by like 2-4 pannels....
My longer one is at 89 while my shorter is at 93 mostly, should i switch my short one for one the same lenght as the one above it?

Not sure what your asking here..Some more info would really help.

What are you heating first of all.

If i have 2 feet of flexwatt 3" on the same parallel as 1.8 feet of flexwatt, will they both read the same temp?

with in a degree or two yea they should

okay, i guess it was just a hot spot or sumthin, now there regulated.
Another herpistat question now....
My herpistat is brand new.
Is it normal for a random 33.1F to pop up for a fraction of a second, with 100%?
mine was doing that like ever few minutes or so...
it just went down to 65.1 for a fraction of a second, is this to keep it at 91?
i have it set for 91, and its doing good.... except for the random low number for like literally almost enough time to read it.

anyone know what could be causing this?