I have been flying mine all last year. I have it balanced at the aft CG according to the manual. It torque rolls really nice and I need little to no elevator when the plane is pure vertical. If it is leaning forward a bit then I need to be on the elevator.

I noticed when you get in the sweet spot the torque roll rate gets going pretty fast with a 27x10 Menz. For some reason I feel the 28x10 Menz slows the torque roll rate down a bit and softens the plane while hovering. I use the 28x10 now. I got a Mejzlik 27x10 to try but due to the weather I will have to wait to try it.