Violin Setup and Jitter

For my project I am using a Mendini painted black violin. It was given to me a few years ago so that I would have an instrument for busking that is both visually flashy and I wouldn't care if it got damaged by the weather. Now it is the perfect violin for my project because under no circumstances would I stick sensors to me good violin. 

Today I worked on the practicality of attaching the Arduino to the violin. A while back I had accidentally broke on of the posts on my Wittner adjustable chin rest. It's a good thing I held onto it! I had glued the broken post into place and attached it to the lower left side of my violin. The idea is that the Arduino will sit onto of the extra chin rest. At first I had imagined it would be best to place it on the upper left side, but when I tried it, it would not attach there because of the angle. 

I had also programmed a way for the soft pots to act like one long strip. However, the jitter is a problem. When one of them is pressed, it works the way I want and expected it to. But when both of them are released, the jitter causes the program to rapidly switch between each soft pot. The solution is to add a resistor to both of them, which brings their resting value to 0.