I've just spent my second day on a 66.5 production ski, I put my front binding on 30" as suggested, fin is as it came, probably10 degree wing angle,
Skied some 28 at 34 to start with, probably felt better at 32, but happy with 28 as well, today I ran the 32 and 35 on first attempt.
I also went and did some passes at 28/36 and really liked the way it came around on the onside, I've got work to do on offside, probably me more so than the ski.
Very impressed with the first few sets. I'm reluctant to adjust anything, it seems to be doing a great job as is!