My setup is 3421's that were fitted with long leads to avoid extensions. Don't have a perfect mechanical setup but was able to get things pretty straight using two channels on my Stylus.
My problem is weight. With an RX I have 4 ounce in the nose and this is after replacing the stock rudder! Considering going to a pushrod system this winter to loose some ballast.
Scott I like those horns. Wish there was a way to adjust them like the MKs. I used the Chip Hyde ones and cut the edge to get them to reach the hinge line. The clevises that come with them are pretty wimpy doubt I would use them again.