As I'm sure you are all aware of, using a phillips screwdriver to adjust your Z stop is a pain in the rear. I created this adjuster so I never have to use a screwdriver again to adjust the Z stop. It works great, I put an arrow on it so you know where your adjustment is located as well. This is highly recommended upgrade for your Printrbot V2.
Print out the adjuster.
Cut the head off your old 6/32 adjustment long bolt.
Install a 6/32 nut onto the bolt, then thread the bolt into the adjuster at least a 1/4-1/2 inch. Tighten the nut against the adjuster. Screw the knob back into the wooded adjustment shaft and set your Z-stop height.
Now you have a nice long adjustment knob that extends up past your X-axis motor for easy adjustment without any tools.
Use a permanent marker and add some color to the arrow.
I also recommend carefully filing down the threads on the bottom of the bolt where it meets the stop switch, so it's completely even, which means your adjuster will be very accurate in any position.