The original pulley came loose and shredded the belt. The original would wobble. The bolt holding it was completely stuck and seemed to not be in as far as it should. Had to heat the bolt with a propane torch to warm it up then I was able to remove the bolt. The torch messed up the original pulley but that was fine since I had this new replacement. The threads on the original bolt weren't great so bought a new bolt and ran an M6 tap to clear the threads in the auger shaft. Installed the new puller, new bolt, and a bit of thread locker and it all went together smoothly. New pulley fit perfect and no more wobble. A fresh belt and snow blower works great. Would definitely recommend getting a new bolt too and if needed clean the threads before installing.