i keep my bass on the same controls at all times, all full on(passive- volume, volume, tone). and the knobs kept gettin bumped and i would have to readjust that back. so i took off the knobs and recessed the controls into the control cavity covering the holes with electrical tape(punk rawk huh?). i noticed on the nikki sixx bass that it only had an on/off switch for the same reasons. long story short, could i get one of these put on my bass? where could i buy the part? could i put it on myself, how to do it, etc. anything will help, thanks.