All very good advice to be sure.
Dave have you tried aligning it with more than two stars?
From my personal experience using the Argonavis now for some time with my 18inch dob is that I have to remember two things.
The first thing is that I know I have some slight mount errors in my telescope (one being that the Alt bearing is slightly higher than the other) I have fixed the problem mechanically as best I can but it is one thing that I am aware of. I find that aligning with more than two stars works best for me.I set the Align Pick for 2 of 2 stars.
The second is that I need to re-align throughout the night as the telescope settles into the ground.
doing these two thing I find the accuracy quite good.
Sorry for the late response.
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