Problem Integrating GY-NEO-6M with K3NG Rotator Controller

[gdmcintire]

I'm building up a K3NG rotator controller on a Mega2560. I've successfully integrated a relay shield, az and el incremental encoders, and a Nextion 3.5 inch HMI. Now I am trying to integrate a GY-NEO6MV2 GPS. First, I implemented a sketch on an UNO using the Tiny GPS++ library. It works fine on the UNO...sync, using 11 satellites, correct position, etc. The K3NG sketch doesn't seem to be processing the GPS data correctly however. The display still shows the HL59 as the grid. I assigned pin 53 to GPS_SYNC and it does not indicate sync with the K3NG sketch. I tried substituting the Tiny GPS++ library for the Tiny GPS in the code but it wouldn't compile. Are others successfully using the GY-NEO6MV2 with the K3NG sketch and if so, what did you have to do to get it to work?

Greg, AA5C