I'm trying to restore a working SX-1080, turns out the bass turnover pot is broken off at the shaft where the knob is supposed to attach. The schematic shows ASE-105 as the part number, and the 106 part number is for the treble side. Looks like only the 106 unit is available on the auction site, hoping a fellow AK member might have a parts unit with what I need or can direct me to one.