Originally Posted by
angrybear
The erector tube is usually pushed on one axis by screwing in the turret and pushed back the other way by a spring when you back the turret out.
If you look in through the objective with the aid of a torch you can often see the actual workings,
You might be able to see inside if the spring has failed,
or maybe if it's stuck winding the height adjuster up & down might wiggle it loose, tapping the saddle area with a wooden hammer handle or screwdriver handle might also jolt it loose if it's stuck