(Long delay… I’ve been travelling for work.)
Thanks, Chris. I believe you must be right; and that makes all this make sense. Let me see if I can get the rotator defined properly and then test again. I’ll try to remember to close this thread once I’ve tested.
Again, I appreciate the help.
Karl
Yes, Chris, thank you… that did it. SGP centered and rotated wonderfully well after I got the rotator defined and it’s various properties sorted. (It seems it wants to be set to “reverse” in my setup. [shrug])
Karl
Not surprisingly, then, the problem was an old buggy user… long overdue for replacement with a newer, younger, better looking version. 
Funnily enough my wife and kids say something similar, LOL 
Good to hear that it’s fixed, thanks for letting us know.
I’ll look at what’s going on with the set up, some sort of error if the rotator hasn’t been set up may be more friendly. I don’t see it as urgent but worth doing if I need to look at the driver.
Chris