How can I stop my NexStar SE optical tube from slipping in altitude?

Your altitude clutch is slipping, causing the scope to droop in altitude.

To tighten the altitude clutch:

1. Remove the optical tube (for safety) and remove the hand control.

2. Remove the hook that holds the hand control by unscrewing the three Philips screws holding it to the mount arm. 

3. Slightly tighten the nut exposed by removing the hook. This will create more friction for holding the tube to the mount.

4. Replace the hook and hand control.

Updated 12/25/13