While I am without observatory, I sent the MX mount back in to Bisque to have it looked at. Had spent quite a bit of time on the forum looking for the source of my problems. I thought it was related to the time I banged it against the pier while trying to exercise it, but was assured by the Bisques that the mount did not have the power to do that.
So, finally convinced them to return it and look at it. It turns out that the worm gear was bent, and a couple of things were knocked loose and such. They were clearly flummoxed as to how this could have happened. Certainly not something I was going to be able to fix on my own.
So, I am eager to get back to using the mount now that it should be back in spec. This is another reason for implementing a dome this time around – hopefully no worries about banging the scope against the roof.