Doing a little brush clearing today and when I finished I noticed the bucket (NH factory install) would not go all the way back - it stops about 3" on the shaft from where it used to stop. I checked fluids and greased all points but the bucket will still not rotate all the way up - any ideas? Also noticed the bucket and assembly does not move as quickly as it used to. First time I've had this problem and could use some help - any ideas out there?