I have 1 ele half plugged into channel 2, and the other half plugged into channel 7. Set up a mix to slave chan 7 with chan 2. All is fine until I go from hi rate to lo rate , then the end point changes. I have reset the end points for both halves at the high and lo rate position , but they always seem to change when I switch from lo to hi or vice versa. If I set the rates at 100 % for hi and lo everything is fine. What am I doing wrong? Thanks.

Mike