If you are an experienced pilot (you should be with this plane) don't worry about the recommended CG. It is VERY conservative. I am flying mine now with the CG at 5 3/4 back from leading edge. It does not fly tail heavy at all. I plan to move it back another 1/4 before next flying day.

OS 1.60, Slimline Pitts (inverted), Pro Zinger 18x6, Carbon Fiber wing tube. Dry weight = 12lbs, 4 oz.