Chuck, my Suk was built from plans that I bought from MAN and redrew and designed so I could go with A gas engine. It is an 80 incher with A Brison 2.4 40cc engine. The reason I posted here was I always make up my own kit first then build the plane, it's very easy and nothing more then kit building, just making up ribs and formers is all, A short kit if you will.
Carl Goldberg makes A great Sukhoi 26 kit and around four pages back you will find A thread posted by Huges500E that ran for A long time. A big bunch of the guys built the kit at the same time and I followed there builds and made any changes that I saw them doing that sounded good, Huges {I think} even sent me A copy of the kits dash board that I have in mine.
Most the guys have maidened there planes now and it looks like they were all good flying planes, in my case it went beyond good and was A great surprise for me.
When speaking of an ARF and A kit it can sometimes be apples and oranges. If all the incidences were correct and the plane is ballanced then the Suk. shouldn't be A snapping machine like A lot of the CAPs I have seen, if it snaps your going too slow, mine just rocks the wings like my Extra and lets me know I'm too slow.
Talk to John L-W at your club and he can help you with getting it to fly right. The Fresberg club has some of the better pilots and they can be A great help getting A plane set up.