Jim,
I might just do this on my second one. The holes in the rib on my first one forced me to fit a new ply plate (actually two plates), for the servo screws. There was no grip for mine at all. I might just as well have done that with a horizontal plate the same as you did.

With 5 more flights in better weather the trims are settled down. The rudder is at neutral. The elevator is close to neutral. The ailerons carry a degree or so each of left trim. I would have to adust the fixed anti-rotation pins to get rid of it.

The up and down lines have no roll. The KE is still sweet. The pterodactyl-screech of the ailerons only happens in the snap and is acceptable.

The rudder is very strong and I use very little for roll corrections etc. It has no problem in cross-winds. The switch to conventional hinging does mess up the clearances with eth elevator halves, so be prepared to sand them away to avoid fouling the rudder. If you have not fitted your elvator-tubes yet then move them forward about 3/8".

I am considering going to four wing bolts fore and aft instead of two in the center. My Pinnacle uses four and it is drum tight. The Impact rubs away at the fuselage sides at the front. With four root-bolts I could make my wings semi-adjustable. :-)

Also the supplied yellow bottom of the wing is as good as invisible in the air. Add something dark :-)

Regards,

Eric.