I forgot to mention (in post#11) that I used Stellarium to 'goto' each azimuth's (AZ) elevation (ALT) to find the actual clear view of the sky. (Up a little more? Racafratz pakalumer! I went the wrong way! )
Even with comfortable familiarity with an EQ mount, it was quite frustrating point to the exact spot I needed to log for the zero_horizon.txt file. So I clicked on the spot (after pressing 'A' in Stellarium to give a night sky) and hit [Ctrl]+ and it easily found the new spot. No trees? Down a little bit. Got trees? Up until the view was full cleared of treetops. Mark it!
So you use Stellarium to control your mount as a click and go? I was wondering how Stellarium is for controlling the scope. I'm newly getting into some imaging (or maybe more EEA), hence trying to identify what can be seen around my obstructions. So I haven't yet tried to control the scope via planetarium software.