Add note that C12 is optional; not needed if using real TL0x4, fix pots being backwards, tighten up schematic, fit letter instead of the whole must be non-zero. NotchedShaft = 0; // [0:No, 1:Yes] // Do you want the ring. RingWidth = 0; right_rib_x = width_mm - col_right + tolerance*4 + 8; //three knobs plus space.