I just used a 4" angle grinder to grind all the extra metal away. You don't have to worry about ever wanting to put it back in. Thats why I removed mine it just didn't perform as good as the one that I had before. It does move more snow and blow further. The other mod I did was speed it up by changing the big pulley that drives the main shaft.I put a 10" pulley in its place. Makes a big difference doing this as well. I had done this mod to the blower when I used it on my Massey 1655.
I now have the blower mounted on my Massey GC 2300 scut and have done more mods to it. For one the GC2300 has a different rotation of the front pto shaft so I needed to put a reversing gear box to beable to have the proper rotation for the blower to work. Of course this also meant changing pulleys in order to make everything work. I have 6" pulley now on the gear box and the oem pulley on the blowers shaft the original big pulley . I still used the same double idler pulley so still need 2 belts.
I'll try and get some pics of the mod to the auger shaft where I've put in flange brgs instead of the oem bushings.