Can someone clearly describe how to set the cg on this plane. Top wing, or bottom, and how far back, near the edges of fuse or out at the wing tips. Also what engine is recommended, the manual suggests a 52 four strike. The english is so bad. I was considering an OS 72 FS. Is this engine going to be too big or too heavy for this plane. My plan was to assemble the plane then use weights to figure out how much weight is needed to balance it, then use a bigger heavier engine, if necessary, rather than adding weight to the nose, as I've heard of so many other bipes needing to balance. I've been flying several years now, but I have never assembled a bipe other than a GWS Tigermoth.