NEWBIE here, Hello

Hello everyone new member here. Ive had my MPC for a few months and everything was great untill i upgraded to an internal zip. I assigned some drum hit to pads and made programs and all that, but for some reason some hits wont play? I added dead air to lenthin them so there not too small. In the PARMS menue it says there there but they wont play?? out of 73 drum hits the same 3 wont play. I get no error messages, and the mp says they are there. Can someone give a newbe some help please? thanks

whaz up man......your from FP.....i haven't signed up yet but it seems like a cool place......i read the posts instead until i signup......i don't know how to fix your problem but i just wanted to say external is the way....it is faster and everything.......