RE: I finally finished my Sig 4 Star 40
nice job
HoLy Moly... you whack off both the ends of the wing's chamber.
did you take out the dihedral ??
i usually extend the rudder or vertical stab on mine, and
whack 1/2 the chamber on each wing tips.
the weak spot is at former #3 . i re-enforce the fuselage there
on all my 4 star. The weak point moves back to the later former
after every crash.lol