Help needed: audible cuts when hopping sample

Hey guys,

I´m trying to chop up the good old amen break, doing so as follows:

After I´ve loaded the break into Logic, I adjust the project tempo using the region length and locators (globally).

Then I chop up the thing. (I´ve tried various ways, doing it manually and cutting it symmetrically-quantized)

Then I load it into a sampler (creating zones from regions, instrument: samler, one-shot off.)

Basically I do everything this tutorial tells me:

But unlike in the video, you can clearly hear the cuts in my version:

How does this come about? What´s the fix? I´m kinda helpless.

Hoping for an answer, thx in advance