daveb86:
I've been flying my Aresti for about three seasons I guess.
With an O.S. 70 Surpass II I had to add a ton of tail weight to balance. I used the stock engine mount and didn't move any servos. I ended up adding a little compartment to the under-belly way back at the tail for the battery and that saved me 4 ozs.
The two-piece landing gear can be a problem like mentioned earlier. I caught mine in time. The two pieces act like two nail bars and pry the center of the belly away from the bulkhead. Mine was starting to develop a crack right down the centerline when I noticed it. It's a sweet flying plane, I think the differential in the aileron throws helps it to be so solid. I haven't seen it in the last few H9 advertisements so it looks like you may have one of the last ones.
Good luck, they come in hot.
Ray