Elka Synthesizer ek 22 ek 44 OMB5 slide potentiometer 10k B new
£21.59
They all use 3 identical pots, except ER 33 that only uses one.Elka OMB5 uses 7 of these. No more data values skipping or noises. It's very straight forward to replace assuming you can use a soldering iron and a solder pump.