I thought I'd help ya out so I just put mine on my great planes balancer and got 103-104 mm or 4- 3/16" at this setting it should perform real well for you. the directions called for 98mm but I found this to be WAY to extreme-The first time I took mine out it was real sensitive to any tail input (rudder or elevator) so its best to start with it further back and with relativley small movement in the tail (low rates) to start, Especially with the elevator. I thought the elevator looked to be a little small before I flew this bird but found it to be just fine, And if anything kind of sensitive. So I rebalanced it a tiny bit foward and set my linkages to low rates and she handles real nice now! mabey I'll move it a bit back down the road after I become more familiar with this plane but for now this is the best point for balancing for easy going with her!!
I am flying with a O.S. .91fx and have tons of power and have'nt leaned the motor yet ( still breaking it in) I was able to pull off a 'very clean' knife edge with it on my last flight and greased the landings !! I think you'll like it. but just remember to keep it on low rates to begin with.--- Good luck!!
P.S. She tends to want to snap on high rates (with a little extra dialed in) Also all my balancing is done where the wing meets the fuslage. Hope this helps!!