Hello, all. I recently received a pair of Apple //e Handcontrollers ( as shown) but it appears there is something wrong with the analog locations. While running Breakout, the paddle twitches and jumps all around. I wrote a small program that outputs the value of pdl(0), and saw that the value will sometimes spike while turning the knob, seemingly at random, but will never be above 244. Additionally, there is a large "dead zone" when the knob is turned all the way to the left... the value stays at 0 while turning the knob to the right a little. What could be causing the issue? Is it possible to recalibrate and / or clean anything inside the controller itself?