I'm seriously small potatoes here but:
I got a 24 HP Sears garden tractor with 54" deck this spring and the 50" Agri-Fab snowblower late this fall. I don't know if this is standard on blowers or not but the AF chute only rotates 90 degrees from center. That isn't far enough, sometimes you need to blow farther back to avoid blowing onto things you should not be dumping snow on. The other option, not always available, is to blow it the opposite direction so the wind can blow it right back at you. Also not desirable.
The "gear" under the chute is plastic and has grooves cut out for the spiral turner to engage. I used my Dremel to cut an additional groove on both "ends" and now can blow about 120 degrees from center. I had to take off the bolted on "rotation stop" and grind off the one molded into the "gear" but they aren't needed anyway. The spiral turner can't turn what it can't engage.
Maybe you can post some pictures of your snowblower mods and you snow removal rig on the thread "Pictures of Your Snow Weapons" I would like to see your blower chute mods.