I will check this tonight (if weather is OK). Basically the slew position with selected star in MW4 and selected star in Handpad should be exactly the same as the command protocol implemented by 10micron as main goal. So far I had not much trouble in my setup, but we will see.
I've been updating the hipparcos catalogue (which should be not any issue as the catalogue itself was finished in 1991). But there might be some updates in catalogue data in the firmware done. We'll see.