DSM injector clips?

[FattyBoomBatty]

With my setup I have a '90 1G harness with what I think are the stock clips, when I start the car, it sounds/feels like it's missing on at least one cylinder.

I didn't get a chance to check each clip today, but I will tomorrow. The question is how often do those go bad/need to be replaced? I feel like they might be the cause of the rough running. I was able to get it running a few days ago and got it up a little past 1000rpm but it was still doing it.

I'll give an update tomorrow when I test it, but your thoughts on the clips would be great.

Thanks!