Just found these on Farnell uks web site RSAOK11A1 ALPS POTENTIOMETER, SLIDE 10K; RoHS Compliant:YES; Resistor element type:Variable Sliding; Resistance, track:10kR; Power rating:0.25W; Travel:100mm; Case style:Linear; Centres, fixing:120mm; Length / Height, external:132.6mm; Are these the correct motorised versions I need to order for a midibox lc?