Note the bubble on the right hand side… not too level is it?
This is the northern wall of our roll off roof observatory. It was level when we built it back in 2003 but over the past 11 years the ground has sunk slightly and now when the roof rolls, not all of the wheels touch anymore.
This makes it harder to move the roof. It looks like it is time this weekend to jack up the sinking side of the observatory and correct this issue.