I have an ultra rc quest 90 g2, with an Saito 91 in the nose.
Does it seem resonable to require 21 ounces of weight to get the cg to 7 1/2 inches?
The problem is besides that the cg now being at 9 1/2 it makes the aircraft"bolloon"(climb) when the throttle is cut .This is when being flown by an accomplished 3 d pilot,not I.
Now it is possible the angle of incidence is incorrect on the horizontal stab.But that is a factory set item.
Any "takers"?