I have been emailing and conversing with the Carvewright tech to no avail. My problem is with my second machine. I replaced numerous board sensors in my first machine which I purchased 11 years ago, and am still using. I never had any problem mounting the replacement sensors. With my new machine, however, the only way that I can get the holes in sensor to line up with the mating tapped holes in the Y truck is to elongate the holes in the sensor. Just can't pull the sensor body close enough to the Y truck for proper alignment. Tech support maintains either the cable is in the way or I'm just putting it in crooked. I'm not buying it because I replaced maybe 8 in the old machine with no alignment issues. Any thoughts?