How to line up clips from the same source on the timeline?

I'm finding that the positions of clips on the timeline are changing when I don't want them to. It's as if someone's going to random clips and holding the "SLIP DESTINATION" button on my keyboard while scrolling the jog wheel — so the specific section of the clip (what I want shown) is off. Anyone have any common "gotchas" or tips as to why this might be happening to me unknowingly? I'm simply editing clips one at a time along the timeline in chronological order and I never do ripple deletes or any actions that I'm aware of that change past clips I've already worked on. And yet, here I am, editing clips I've already painstakingly edited...

Given that this keeps happening, I'm wondering what the best way is to line up two clips from the same source file that I had cut in separate clips. I generally do this when I need to add fusion animation or something and I only need to add it to a very specific section of a long clip, so I use the blade tool to isolate just the section of the section I need, turn that into a fusion clip and add the animation. This works fine at first, however, like I said I'm finding that sometimes the clip doesn't sync with the following clip after I've done some further edits down the timeline... Again, I'm not willingly/knowingly changing any clip durations or adjusting clip positions (in fact, that's all done now — I'm only adding text and some tracking effects at this point). So... in the event the two clips which I cut get de-synced somehow (they should have seamless video and audio as the timeline moves from one to the next), how do I "re-sync" them?

Thanks

My solution to this so far is to simply zoom in as far as possible on the timeline and then with the adjacent clips on different tracks, line up the waveforms. This works, but I'm wondering if there is some automatic method?

I'm not aware of any way for this to happen on it's own. My best guess is that while you may not be doing it knowingly, you are doing it. The only solution I have to that is slow down and pay very careful attention to every edit, trying to find the move that causes it.

Yeah, I'll give that a shot the next time through. Thanks

Is it always the Fusion clips that are slipping? Could it be something happening in Fusion to alter the timing of the Media In nodes?

Is it always the Fusion clips that are slipping? Could it be something happening in Fusion to alter the timing of the Media In nodes?

It's all the clips. Today I experienced a possibly related issue with the timeline appending strangely (it's possible this caused my issue before but it's hard to say for sure). I posted about it in this thread.