Need to condense multiple clips in storyline spaced throughout timeline
I'm new to FCP and likely began the project inefficiently, causing this dilemma. I have multiple videos stacked on top of each other. I have done a lot of splicing to each of the storylines, and will be removing clips throughout. Ultimately, I'm needing these clips to be condensed and connected with each other within each storyline (ie one row of footage needs to have all clips connected to each other, not spaced out on the timeline). However, because these are all connected to the primary storyline, they don't move. I've got almost 500 clips (times four storylines) spread out across the timeline that needs to all shift to the left on the timeline to be all together. Is there a quick keyboard fix to do this so I don't have to manually shift all clips to the left throughout the timeline?
Hope the question makes sense.