Thanks very much for all the input, it's very much appreciated. A real wealth of field experience here. I will have more questions. One that comes to mind right now is the CG. Do I plan my install on being tail heavy? Also the CG itself I see has been moved to 12 3/4. Is this optimum or can it be moved further back?

DavidR, Those wheel collers and grub screws may seem crude as restrictors but once set up they sure are reliable. My Aggressor only gets about three flights a year but the retracts are always flawless.

Patrick, What size Dan Gill chute do you use? 14 or 16 inch?

David G, The slotted stab is that cut into or added on to the leading edge? Mine will be a AF C model, perhaps without? I have not got any documentation yet and have still not settled on the subject yet.

Here's where I'm at: