Hi Guys...
Well, I am very happy to report that the Nexstar flys like it should now!! Ailerons will now bank the plane at slow speeds and there are no "sudden" banking events as before. I still use the rudder when I fly but as I stated, you can now fly the plane with ailerons.

As for the subfin, it is attached at the rear with the rearmost plastic bolt that holds the tail feathers in place and at the front with a plastic screw just going into a tapped "CAed" hole in the fuse. I put a notch in the fin where the front plastic bolt is. Seems to hold just fine but I only have two flights on it with the mods. I built it with 3" wide 3/16 sheet balsa and glued that to a piece of good spar 1/2 x 1/4 balsa. That piece of "spar" overlaps front and rear for the mounting screw/bolt.

I bent the "joiner rod" 5 degs and everything just slips together as before but now with only half the dihedral.

As for flapperons, I always use a separate channel for each aileron servo and could easily program them as flaps for takeoff but I really like to play!! That's one reason I decide to buy that particular plane. I use that feature on my Bonnie 20 and it benefits on takeoff but can introduce a tip stall on landing if you forget them!! And as I may have mentioned, this plane flew just great until the floats were added. They are what caused the issues I had.

I had the floats installed by a friend that runs a small hobby shop here in Maine - Art's Hobbies - Skowhegan, Me. He builds his from foam, adds a hardwood mounting strip and fiberglasses them. A bunch of us up here use them and they work very well and stand up to abuse. These are 38" and he mounts them with music wire. He added hardpoints inside the fuse, drilled holes into them from the side, and the MW just slides into those holes and are held in place by a brass bracket with tie wraps. Unfortunately, the plane is at camp and I won't have access to it for photos until I return from there in several weeks. The attached photo is not that great but does show up the mounting area and the fin

BTW, the 52 OS FS is more than enough power for this plane as I fly it. Will loop from level flight. Cruise at half throttle. And I wanted it for casual flying. If I want aerobatics, I will fly my Seamaster. It excels at aerobatics.

Hope this answers any questions.
Joe