Have you ever had any issues with the fitting on top of the box not being able to thread in very much since the tap can't go that deep. I have done a couple of boxes and wish the fitting went in deeper than 3 threads. I am working on another one now and I am going to use a second tap after running the first one that bottoms out. My second tap will be from the same maufacturer, but I am going to shave off 1/4" from the tap. Hopefully this will allow me to use the wider part of the tap and be able to get the fitting to screw in more than 3 threads. If I get 4 or five I will be very happy. Especially if it does not leak.