So I think you must be misunderstanding me, so I made a graph in Excel to explain it better (because I'm a GIANT geek)

I know I WANT to have a hot side at 90-92 or so, and a cool side 80-82 or so, with some gradient in the middle, cause that's really the only way it's possible...HOWEVER, when I do my setup that way, I end up with my hot side being too hot, and my cold side too cold: or at best, my hot side WAY too hot or my cold side WAY too cold while the other side is just right. As it is, there's about 4 inches in a 30 inch tank where she can be comfortable. So the point is, that the temperature is falling off with a much greater slope than I had wanted in order to get good temps on either side. I was thinking that if I moved the UTH to the middle, it would work out such that there would be plenty of hot space and plenty of cool space, at the temperatures she needs.


So that said, can you please explain to me why that would be bad, if both temperatures were available, other than just saying "your setup is wrong!"?
I have no problems with changing my mind, but I need to first realize *why* it's bad.