GR8:

I switched from Radial X-Weaves to a/c/c 3-71's for this coming season. I initialy had a similar problem to yours....and I've always shot cock vane up, too. I noticed that by switching to a "fatter" arrow.....my cock vane orientation wouldn't work. The extra girth of the arrow now had my Blazers touching my cables.

So....I turned my cock vane to perpindicular (straight out to the left).....and my problem was solved.

I hope this gives a "little" insight.

Good luck.