mpc sample cut off with kick

i notice that on my mpc on one of my songs. the sample i have cuts off durring the 8 bar loop or 4 bar loop when i have my kick programed, does anyone know why this happends. the mpc is not overloading or not that i know of, even when i change the master level its the same. why do some kicks make the sample cut off, im so frustrated with this mpc. i dont wanna sell it. for example i have the sample of strings chopped on its own program playing in mono not poly and i have my kicks and snares on a diffrent program in poly. even when i change the strings program to poly same thing, and i re recorded using a diffrnet kick and it seemed to play without cutting off the sample. is the kick sample too hard or something. it should not effect the sample.. please help.....

you might be running out of polyphony. Solo the track (or mute other tracks) with your kick+snare program. and listen it through... does it still cut off?

Now unmute other tracks one by one and see when it starts happening.