Thanks for the input PDOP's I didn't see it last night before I posted Update #2, I followed the link, but it appears that it only works on the GPS 18. GPSgate worked pretty well for me today, only had one issue where S&T stopped getting signal, GPSgate said that the GPSr was still connected, but wasn't recieving data, shut the summit off and turned it back on and we were good to go. I think the GPSgate express license is $12.95, I'd say its worth it at this point