Are needle positioners for brushless servo motor drives all the same

[beefy]

4 hours ago, friquant said:

I see now why you're asking if a needle positioner is required in order for that button to function..

What about the other menu functionality? Are you able to set forward/reverse and min/max speed?

Yes I managed to change the other two you've mentioned. 

Still no reply from the seller, and I can't see any sign of him/her being on vacation. I'll wait another day or so. Supposed to be a very reputable seller.