John, The King Altair is a great combo for SPA teamed with a OS 91 FS on CP Heli 30%. I built one 2 years ago when I flew in a few SPA contest. It was All up weight of 7.5 lbs. Alot of fun, flew at a much slower speed than the DR I was flying. Very Graceful and smooth flying . It was near like flying my 2 meter planes. It was the best flying SPA plane I have flown. It now has a new owner in town here, and he even commented ( along with a few of his competition) that it made him a more capable pilot. I have some templates made to ease constuctioon of the plane. Keeping the original planform, just different and lighter techniques in framing. If you build it with all the different parts as the plans show, you will be at 8 or more lbs. Keep it light, and its one of the best SPA planes flying.

Later
GW