loop pauses 4 second when i try to add another sample

Hey ya`ll.Its been awhile since ive played with my mpc and i am still a newbie.. So i decided to put some new recorded samples from my records on there to mess around with..

Had no problem recording,choping,triming and assigning the sound to the pads/banks..I was playen around(freestylen it) and the sounds sounded good to me...

Here`s were the problem poped up and i should say this hasnt happened to me before..I go to recored a 2 bar loop.It recoreds it no problem but when i go to put another sample over it as soon as i hit the next sample pad the loop pauses for a second..This happens when ever i push any sample pad.

If anyone has any clue what my problem is or if there is any other info you need to figure out this problem please let me know..!!

record that sample on a separate track.

Thanks for the idea,tryed,but no dice..Same problem...

Here is something else that happens..Sometimes a sample sound from bank c or d will come in really quick when i hit a diffrent sample pad on bank a or b..

NOTE:THIS ONLY HAPPENS WHEN I TRY TO RECORD A LOOP FROM SAMPLE PADS..

Thanks again for any help.

By the way i have the 1000.