Derf,

I know what you mean, Your we do well eith the Ys91. Mine started life with that engine and after 500+ flights I ran it a little to lean one day and spun the connectiong rod so hard it hit the crankcase. I gave the egine to a club member and he rebuilt it and put it in his CG Ultimate and I bought the YS110. It a great match for the plane. I did 2 elevator servos in the rear and pull-pull on the rudder and moved the tank over the CG

What a plane. I spoke to the guy that bought it and he is thrilled with it.

My main concern on the CG is the weight on gas