Thanks for replies guys. To be honest, i havent had that problem for hmm 4 years? Sth like that.. So I assume it's not a calibration issue... it worked well for that long and i changed nothing in my setup. I think that its something physical. Maybe the cymbal flexes on the mount, hall sensor rises up a bit in relation to the magnet and it's identified as a chick sound. I wilk try to take the cymbal apart and investigate it further.