I've cleaned my potentiometers, I use a star tech 3.0 usb hub for more usb device accuracy (connected to pc via usb, and to make it stronger, also plugged in to a power outlet), and I use leo bodnar usb cable for the pedals. All three above really helps with the accuracy of the pedals. Without these accessories and cleaning the pots, the pedals are always jumping or slightly pressed on their own.
If you recently took apart your pedals, make sure to double check to ensure that all parts are placed back tight and firm, nothing should be loose. My gas pedal was jumping, took it apart and found the small spring (not the pedal spring) was loose. So I placed it back firmly. All is ok now, hope this helps. I also have GTEYE installed