RE: GP Extra 300S 60 Build
The recommended CG range is 4 1/8" +/- 3/8" (back from LE). Mine balanced at 4 3/16" back from LE, but there is scope to move the battery forward as I have mounted it on velcro strips so repositioning it is easy.
For paint I have had some 2K automotive paint mixed up to match the red ultracoat, hope to get a chance to spray at the weekend.
The canopy now looks like it is 10 years old from the gluing, removal and washing. I may order another from GP in the near future. Fixing with servo screws was easy and neat.
The Saito 125 weighs 700g (just over 1.5 pounds).