I'll be watching this thread too. I just got my bitz yesterday. Bought it used off Ebay. It came with a right helical clamp, and it was already set in an offset position. The front was to the left, and the back I think was slightly to the right. There were marks on the jig too for these positions that the former owner made... I figured why mess with success, so I tried fletching my first arrow with blazer vanes that I pulled off of an arrow I broke the other day (just because i didn't have any new vanes and just had to try out my new jig). It seems work fine... Contact all along the vane, seems to be stuck on good just with scotch brand crazy glue gel. I may get to the range tomorrow and see if they stay on after a few shots