Tab to Transient issue

Today I've been putting a click to a backing for a band I know and I've encounted a strange issue. This may be normal but I'm not quite sure. The issue is that its not quite tabbing to the beginning of some transients. I've made a video so you can see what I mean.

http://youtu.be/QjRrUY5HCg8


Thanks in advance Raoul

Tab to Transient issue