Hi John, now I understand what you are looking for. There was a time in pattern when it was "vogue", for some, to run a rearward CG and like you said or asked, it was possible because the long tail moment on a pattern plane made it more possible, IMHO. Keep in mind, my knowledge base comes from practical application based on 25 years of building pattern planes and not a degree in aeronautical engineering. My placement of the CG of approx 5mm in front of the CG suited my needs based on how I set-up my planes and personal preferences and feel. Also note, beginning with that particular plane, I've used small elevator servos in the side of all my fuses, under the stab, instead of using a DEPS type arrangement ever since. You are right, in the final analysis, the placement of the CG starts with a reference number provided by the designer or manufacturer and you determine what suits your personal taste or feel to achieve the flight characteristics you desire by changing the location of different components. Relative to your placement of the CG at 195mm behind the leading edge, where does that put my 5mm in front of the wing tube? Just curious because that was several years ago and I had given the plane to a flying buddy who then "strained it thru the trees"! BTW, I had an AXI 5330 F3A motor in mine and it was STRONG! You guys will do fine. Enjoy the flight, Everette