Here's another question...

Recently, I started having trouble with the analog joystick on one of the Nintendo Gamecube controllers. Not wanting to buy another one, I dismantled the controller, desoldered the analog X/Y potentiometer assembly, dismantled the troubled potentiometer, cleaned it carefully with isopropyl alcohol, reassembled, and resoldered. The joystick works like it was brand new again.

Does anyone know what the innards of the empeg's rotary encoder are like? Is it possible that it would benefit from a similar procedure?