Hi. Need some advise/help here. I have a PBC 10 with the stereo loop setup as follows: L7 - mono chorus pedal (mono-stereo converter cable) L8 - Strymon Volante - Parallel (TRS to dual mono cable) L9 - Strymon Bigsky - Parallel (TRS to dual mono cable) L10 - Chase Bliss Gravitas - Parallel (TRS cable) L8 to L10 works fine. The issue is at L7. When I OFF L8 to L10 and ON L7 with series, it works fine. But when switch to parallel, I could hear a volume boost and could rarely hear the chorus effect. When I ON any pedal between L8 and L10, the volume on L7 series suddenly dropped - almost could not hear anything. If I switch to parallel, the volume is back but could not hear the chorus effect from L7. What seems to be the problem here? Thanks.