Bovan,

"Also mine had the infamous "cap snap", were it snaps out of a loop if I put in more than half elevator. I seemed to be the only person here that has had that problem even though I balanced it laterally, made sure the elevator halves were in sync, moved the CG forward and aft, all to no avail."

I had a problem with snaping on a couple different airplanes including this one. I remedied the problem by pushing BOTH ailerons up a 1/16" or so. This allows the wingtip to stall before the root. It worked on my CG Extra and the Matt Chapman Cap 580. Give it a try, I'm sure it will work for you also.

I'm fly this airplane with a YS63 and its a great airplane.