TGRE,
Lube the discharge chute where it it mounts to the augar housing.
The area that it rotates on!
Maybe that will help. I did mine and it is much smoother.
Fred
Husqvarna STE927(11.5HP) snowblower, MTD Pro Series 18/42 Lawnmower, MTD 6.5 HP Self Prop Lawn Mower, Weedeater 1500 Blower, Web Gensis 2000