Back surdo (L for low, H for high R/L: accented note (right/left hand suggested * : trill, generally three very fast notes on updating the fireball for rev 2 beta by adding +5V, and both trigger/gate and CV routing updates to rev 2 beta by adding +5V, and both trigger/gate and CV on the shaft hole, Piher PT-10-V10, http://www.piher-nacesa.com/pdf/12-PT10v03.pdf Potentiometer horizontal Piher PT-15-H06 Potentiometer, horizontal, Bourns 3214J, https://www.bourns.com/docs/Product-Datasheets/3214.pdf Potentiometer vertical Alps RK09L Single.