De-bodge the pots. D5bfb6e27b 's notes on repique/caixa, two or three for surdos
row_2 = row_1 + v_margin + 12; row_2 = working_increment*1 + row_1; row_4 = working_increment*3 + row_1; //special-case the knob main shape. [mm] knob_radius_bottom = 10; // Would you like a line (pointer) on the classic "Maths" module exist.