RE: Biplane aileron setup
I thought about putting a cross brace but the week main gear does act as a shock absorber if it slams down hard on the landing. Better the main gear takes some abuse instead of it all going into the frame. You do need to keep up a little speed on landing otherwise it will fall like a rock.
Mine was built and setup per the instructions with no tweaks needed for a very smooth flying plane. Using a saito .91 4s, It still needed 3 oz of lead on the firewall to get it to balance on CG. No aileron diff. No wing incidence.
Instructions came with three rates - low, high, & 3D. I have mine set on low and high (can't fly 3D yet). On high it is very responsive and will do riffle bullet rolls. A friend at my club had no issues getting it to hover.
One thing you will notice is when it's flying straight and level it looks like it's dragging it's tail a little but that is just an illusion by how the fuselage is designed with the tail swept downward.