EXS 24 Logic Sampler Users Group

I am trying to loop a drum loop (recorded from the beginning of the 
Depeche Mode song "Useless".)

The loop is 5 bars long and to make the looping seem as smooth as 
possible I use two audio tracks, each with the drum loop, so that the 
first audio file runs from bar 1-5 and the next from bar 6-10.

However, the second audio file "starts too early" at position
6 1 1 1. The transition is smoother if the starting point is
changed to 6 1 2 1 - but then the loop gets more and more "out of 
sync" as the song position advances.

Has anyone had this kind of problem too? Hope it is described alright.

Best regards,
Henrik Jensen