Mine seems to be balanced okay, about 4 1/4" back from the leading edge. Its not quite laterally balanced, I'm going to have to add some weight to the left wing tip to counter it.

I didnt have a problem with the throttle linkage. I have mine coming out of the firewall, bending down, then back up to meet the throttle horn at a good angle. In the radio compartment, the linkage bends down (with the fuselage inverted) and inwards to meet the servo arm. Seems to be working okay. Its not completely smooth, but I sqirted some silicone lube in the tube and that helped alot, no binding issues.

What issue are you experiencing? I followed the directions in the manual, and it all worked fine - I'm using an OS .46 FX

One thing I found was that with full rudder, (approx 45*) it wants to roll. This makes knife edges a little tricky. Is this normal behavior? I know it is in aircraft with dihedral, however this is a flat straight wing. Maybe its just too much throw?

Peter