[Slavik Boyechko]

I dislike the gaps too, and sometimes multicam syncs (even with pluraleyes) get 95% of the way there but you still need to move things around to fine tune the multicam file in the angle editor. There is an easy solution!

In the angle editor, place your playhead on a random part over two synced clips, and add a marker on each clip. Now you can drag each of them around and minimize the gaps, but still use the marker to sync them back together. Sometimes FCPX will make you use the “position” tool rather then the cursor inside the angle editor, but it works just as well.