I went ahead and did two dry runs using daytime routine with a sequence of 2min exposures. Follow the procedure outlined by cmassa on the forum in 2015. This time "time to flip" was displayed along with the run button being highlighted on the control panel. Both sgp and 10 u were set to flip 1 deg (10u) or 4mins(sgp) after the meridian crossing. I started the 5minute subs after slewing to an appropriate target several minutes before the meridian. After 4 minutes past the meridian, sgp issued a flip command to the mount. At that time tracking stopped on the 10u mount. An error message was shown in sgp saying that the flip was not successful (BTW, SGP did stop the imaging when it saw the next image would interfere with the flip, so that appears to be working).
At this point I'm open to any suggestions that you guys may have. Time, location, hemisphere doesn't appear to be an issue since I am able to park the scope with sgp and the countdown to the meridian flips seem to be well coordinated..........Thanks for you help.