RE: Does your WH edge 540 require up elevator to fly level?
Yep, I have to agree never CGthe plane with a full fuel tank. THe reason is that when you start emptying that tank your CG will shift to a tail heavy plane. If you get to low thenand to tail heavy you will be in for a real bad time.
I know with my Edge I went to a smaller tank. 16oz. and got it right on the wing tube area. It flew really nice with it there.