PB with mixing in AD

[krickgpe]

Hi, I use AD with my megadrum where is pluging my diy drumkit (kick/Snare/HH/5 Tomtoms/4 Crashes/1 Ride/1 Chinese). I try to adjust the level of each individual element in AD but it does not work for all elements, for example for cymbal1 lowering the output level in the AD works correctly but not for cymbal2 or for Snare, the sound stay at 0db...



Do you Know where this pb can coming from?
Thanks.