ON GP's Support site, they have the "new" manual for this, and it keeps the same 4 5/8" measurement, but measures from the front of the wing where the WING MEETS THE FUSE SIDE, instead of an extended line of the leading edge to centerline. I have not flown it with the change, but a 1/2" change on this small of a wing is a LOT. It is clearly diagrammed in the new v.101 manual on the GP website.

Another way to say this is, the correct CG according to the new revision is 8 1/4" forward from the trailing edge of the wing at the fuse side.

I was having to put in more up elevator trim than I thought should have been needed (it was still less than a 1/16"), and the inverted elevator sensitivity wasn't quite up to snuff....so maybe the new CG will improve that and be better.

Moving it aft like this WILL induce some belly pitching, so maybe it won't be so good, but I'll report back.....