My A-156 Dual Quantizer doesn't respond correctly to transpose voltages. When I apply 1 volt it does transpose from C3 to D3. With 2 volt it transposes to D4 etc. So it's still 1 V/Oct. At the bottom of the pcb is P3 (according to A156_adjustment.pdf). Do I only have to adjust this trimpot to correct the issue

Thanks in advance and best regards,

Karel.