If any of you are using the Reach M+ mounted on the Phantom 4 Pro and are trying to achieve the most accurate camera coordinates as possible you may wish to try GeoAdjust. It corrects for timing issues, antenna to camera offsets, lever arm, and helps pair up camera events and photos. It can also be used for post processing Phantom 4 RTK.
Small projects less than 75 photos can be processed without registration.
https://wsi-software.webbersurveying.com
Thank you,
Bill Webber
WSI Software