Thanks. I got it working and it appears to be calibrated. It also appears to be responding as intended with MAVROS when I publish to /mavros/setpoint_velocity/cmd_vel_unstamped
I tested with props off and powered via battery. I published 0,0,1,0 corresponding with vertical speed of 1 m/s up and the motors sped up. I then published 0,0,-1,0 and the motors slowed down as expected.