Actually, NO THANK YOU, YUNEEC. Upgraded to build 750 and now the gimbal initializes pointing downward about 30 degrees and the slider knob that controls the pitch of the gimbal only works intermittently and I can not switch between photo and video mode. I did the RC calibration of the controls with no effect. Will now be attempting to roll back to the May 7 update.
EDIT: don't know if it was me or a corrupted download/install, or ... I replaced the 750 build on the ST16S with the May 7 build and did a new FW update to the 750 build. It downloaded and installed as it should. I then did the Gyro calibration and the RC calibration, BEING SURE that the tilt knob was in its center position. Rebooted both the H+ and the ST16S and everything appears to be operating correctly. The gimbal now locks on horizontally as it should when the slider knob is positioned for horizontal. Also, the gimbal knob is no longer intermittent and I can switch between photo and video mode...