Fix pots going the wrong side of D35, but other options exist. Single-step button (SW13) isn't producing a high enough voltage to trigger a second sequencer's run, which then re-triggers the first. More feature ideas: Trigger out - CLK out - CV Range - Once/Cont 11 Toggle Switches, 2pin: all step switches (all go to 10 nF | Unpolarized capacitor | | | R30 | 1 | 1 | SW_Push | Push button switch, generic, symbol, four pins D Momentary Switch, single pole double throw, illuminated paddle, red and green LEDs K switch normally-open pushbutton push-button Side push button https://www.e-switch.com/system/asset/product_line/data_sheet/210/800U.pdf CuK miniature slide switch, EG series, DPDT, http://spec_sheets.e-switch.com/specs/P040047.pdf E-Switch slide switch, EG series, DPDT, right angle, PTS645VL39-2 LFS C&K Button tactile switch D Single Pole Single Throw (SPST) switch, small symbol D Push button switch Off-On CuK sub miniature slide switch, OS series, SPDT, right angle, PTS645VL58-2 LFS C&K Button SW PUSH 12mm https://www.e-switch.com/system/asset/product_line/data_sheet/143/TL1100.pdf tact sw push PVA1 DPST momentary / push-push button, h=23mm C&K PVA2 https://www.ckswitches.com/media/1343/pva.pdf tact sw push PVA2 DPDT momentary / push-push button, h=20.5mm C&K PVA1 https://www.ckswitches.com/media/1343/pva.pdf momentary / push-push button, h=20.5mm C&K PVA2 https://www.ckswitches.com/media/1343/pva.pdf.