The "wing thing" (removing dihedral) is arguably the most important mod that you can do to this bird.

The easy way is to bend the steel rod, bit-by-bit, until the wing lays flat & then fill the central wedge-shaped gap with balsa wedges & Probond. Drill a hole in the LE for a 1/4" dowel & drill a new hole for the wing hold-down bolt (reinforced with a ftat plate of 1/16 ply) & away you go.

I prefer to cut into the end ribs & glue in a hardwood wing joiner against the mainspar, and add a 1/8 ply LE wing joiner up front. The gap is filled as noted above. This is more work, but it is lighter & a bit less flexible.

I always add dual aileron servos to a Nexstar wing mod -- this eliminates any chance of aileron flutter.


As noted by Winghawg1, the LE droops don't have any influence at all on take-off stability.


Another important & very easy mod, is to eliminate the right thrust & re-center the engine. I straighten the firewall with a balsa wedge, then cap it with a layer of 1/8 ply before re-mounting the engine dead center. In the case of a crash repair, I actually completely replace the firewall with a 1/2" thick ply piece, laminated up from layers of balsa & ply. I also pin the firewall from the sides with #4 screws.