Larry , on the rebuild, i added 1 inch to the nose and 2 inches to the tail, worked out to put the cg about 1 1/4 inches behind the leading edge, maybe a bit noseheavy but flew really well, maybe the extra power of the la 25 helped,, FS #1 sported a .20 FP, also used 3 degree outward thrust on the engine, the tank is a 3oz hayes which only holds a little over 2 oz, figure that one out ! Also on the tank , silicone or neoprene would not give enough flexiblilty with that little weighted pickup so i used latex inside the tank, helped a lot burned all the fuel. Used Landing gear from Brodack , split in the middle with a little piece of copper tubing to support, broke on landing, ( a smooth landing), not broke apart but loose, will replace when it gets too sloppy. Overall was very happy with the maiden flight, did all the stunts and just flew very well. Will try to salvage wing from FS #1 and rebuild about the same way. Prop is 9x4 , muffler bolts kept backing out on first bench tests, used new ones from another motor and used threadlock, will try to find cap head screws this week the philips heads were too hard to try to tighten enough!