If I understand what you are saying, then the connections are not the issue. It is firmware support that is the issue. Watching videos of this device working, the bit is placed inside the circle. Then the firmware moves left and right to find two circle edges, then it is moves forward and backward to find two edges of the circle. From those touches the firmware can calculate the center point of the circle which will be the corner of the stock. In a couple of the videos, they were running GRBL, but I’m not sure if it was the main fork or if it was a custom fork. Plus in one of the videos I saw, the corner finder plate shipped with code that had to be added, but I’m not sure what firmware the code was for.