What is the empty weight?
My empty weight on 35s is 1480#. No fudging on anything, it is what it is. In conversation a few guys have criticized the weight. Truth is, the Cub drivers I respect and admire most that have seen it in person have all said they're surprised it doesn't weigh more. It's a big plane. Taller, longer, wider than a Cub, and the wings are big, too. Slats, big split flaps, big motor, CS prop? Not the recipe for a light Cub. When I consider those attributes next to a typical modified Supercub on 35s? It really is surprising that it doesn't weigh more.
My CG yesterday was 15.39. I have lots of capacity to add weight aft but I'm still learning the plane. As for GPS calibration? Don't care at this point. I just want to determine the best speed to get this beast down and I fly by airspeed, not groundspeed. 21 mph wasn't the minimum speed it's capable of, it's what I saw yesterday using a wheel landing attitude.