The SE project is getting close to being done. My estimate for finished AUW should be 5lbs 10oz. This is about the same as the first kit I built, but does have some important features that I wanted that would have otherwise added to the tally hadn't I saved some weight here and there. I just fixed a friends plane yesterday that wouldn't run reliably and found it to be a pinhole in fuel line right at the tank. So I do like the idea of the fuel hatch. I also added an extra cell to use 6v rx system which I have been wanting to try. I have a well glued solid airframe with extra supports wherever I thought they could assist. I had fun and learned alot. In conclusion, I do think that Sigs claim of 4.25-4.75 lbs is rather optomistic. I agree that huge weight savings could be made with stick building of the control surfaces, fin and stabilizer but that would detract from the beauty of the slap-it -together ease from which the kit is famous. So, I guess my nothin extra idea ended up true to its word-nothing really extra about the build! Just a fuel hatch and 6v system which is done everyday and is no big deal. But thanks for your input, I will post actual finished weight and pics of completed project. Thanks again.