RE: Sebart Wind S Pro
Terry,
I'm running mine a little further forward than he recommended. I'm running mine at about 175-180mm. With the canopy off, mine balances just behind the bolts that hold the wing on.
I really like the feel of a much more forward CG. Plane still snaps awesome with the CG where it is, but I have 0 pitch mix in either direction.
Arch