MPC 1000 sample problems

What's crackin? I sampled myself playing on my Korg TR, a 4 bar loop. When I hit the pad everything's all good. But when I try to record it to a track, the sample stops playing halfway thru. I haven't figured it out yet. Any MPC gurus out there!! HOLLA AT ME!!

switch the sample from one shot to note on

Change the sequence length to 4 bars.