Problem(s) Encountered:

At the very end I could not get the dropleaf or slit to operate.  I tried re-homing the dome a couple times, on the theory the electrical contacts were a bit off, but no joy.

Solution:

Cleaned the skids on the dome contact box.  Moved the dome CCW then homed it and dropleaf/slit commands worked.  Then moved the dome CW, homed it and commands failed again.  So at best, the “fix” was intermittent.  Pulled apart the contact box on the dome and found a broken connector to one of the skids.  Replaced the connector.  Tested numerous times without further issue.