Hi, I have mono in and mono out. My dirt pedals are a mono insert. All levels are unity gain and pan is centered. I created a new program with the POLY algo on A and the PICH algo on B. Both set to +5. I still experience same issue where once the MANUAL FLEX is activated on POLY, the volume drops and tone gets thin. I made a video but everytime I try to attach my reply doesnt go thru. Ill try to add again