Brett:
What do you use for the control system? 3" or 4" belcrank? Horn size?
It's a 3" SIG bellcrank straight out of the kit, and a nylon CG "Large" RC control horn, in the second hole (maybe 3/4" from the hinge line). Stock 3/32 music wire pushrod, unbushed and crimped leadouts.
The original intent was to build this kit (which I acquired to give me a guide to rebuild someone else's airplane - after I crashed it...) for my work buddies to fly at a picnic, and the expected lifespan was <<1 hour. So I did absolutely nothing other than cut out a new fuselage (which I had used in the other rebuild) and stick it together exactly how it came. Picnic never happened.
Dixon 40FP, which I never even *ran* before I gave it to someone to use on their Twister, later Fox 35 (disaster, although I beat David in a contest with it), sat for 2-3 years, L&J Fox 35 with bypass mod at least ran until it started shaking itself apart, next weekend OS 20FP/Circus Hobbies 9.5-4.5, miraculously better. This takes us up to *1996*....
You get the idea, the notion that it would be flying with more-or-less stock moving parts after closing in on 30 years was the furthest thing from my mind.
I can't see any compelling reason to use a 4" bellcrank, the control loads are nearly non-existent. It won't hurt anything, of course.
Brett