I just went down to my local electronics store and purchased a 16mm single rotary potentiometer and brushed aluminium knob. Cost me less than $5 and I installed it on the front of the TX just next to the HL/CL switch. There are a few video's online on how to do the mod. It's a great position to mount so you can move or strafe and adjust pitch easily. I would strongly recommend this mod as it is much less flimsy compared with the shapeways kit, you can mount it anywhere, very easy to do. Check out these links for a trusted easy to install. Excellent control. I marked a 0, 45 and 90 degree angle on my TX. http://youtu.be/r9DFf2ZY8S0 http://youtu.be/4hStYq2vatM this one is the one I used. make sure you wire it correctly, it is very simple. I'm no electronics tech i run a painting company. If I can do it anyone can.