The lower limit (to position) of the Cobra control VI has to be one increment smaller.
This means for moving from 601,95 to 601,74 the "to position" has to be 601.735.

We also checked the displayed HV values in Go4 with the shown values of the HV VI.

Both values in go4 and in the VI show the same value and are changing "simultaneously" (depending on the refresh time of go4 and Labview).