I've got one and it is spot on for rangeing but bug awful when the poi changes with small amounts of temp variations. I did hear Nick Jenks changed the internal bearings to solve this.
If you send it back to Leupolds for service they will convert it back to original state even if you don't want it done!
Apparently the original state was really good.
Fighter against the 'Dark Arts'
Dark keeps moving in on the day.
Steadily going downhill faster!