I was able to get my CG fin right after it was manufactured, the shop is within driving distance. A very professional shop and product. After messing around with settings for weeks, Cord found a great zone for me on my C-65. 29.75 front boot, 6.812 length, 0.646 distance from tail, 2.491 depth, 2.473 onside turn depth, and 8 degrees s-wing is where I ended up. As the water warmed up I had to increase DFT 18K and leave leading edge alone, I also worked my way from 11 degree suggested s-wing to the 8 degrees now. And I added half turns of offset at a time to get to 2.473. I ran 3 out of 3 39's last time I skied, it's dialed up pretty close, I need to work at 41 more to really know. My buddy TC who runs deep 38 used my settings and was blowing the tail in his offside turns. Which is crazy to me because it feels like the tail is so solid and deep. I have not blown the tail yet, even coming in hot offside and just going for it at 5 at 39. I'm happy with the feel because it feels less affected by rough water than my 3.1 Denali. It is a bit slower than the 3.1 due to the s wing, but it's hard to complain with tight line 1 balls at 41.