Hi Ian,
Welcome to the forum!
We haven’t tested RS3 with the XPAD software, but as Florian mentioned, you can update to the 32 Beta 1 version and stream the NMEA GGA and GST message with the tilt compensation:
Our dealer, E38 Survey Solution, has tested RS2+ and X-PAD and made it work, so it should work with RS3 as well.
Please also note that we don’t recommend using beta firmware versions for work surveys.
Let us know what X-PAD will answer.