Video of Soaring at Pradera Ridge
Sounds like you are doing a fantastic job on your Ventus. Please post some pictures. I think I am flying mine with a CG that is 43 mm back from the leading edge which seems pretty ideal. I think if you get much further back than 45 mm she will become unstable.
I continue to have some incredibly flying experiences with my Ventus. Here is a video from yesterday:
Keep us posted on your progress!