Light primer strikes - Zaffiri Precision RTS G17 ZPS.2 Slide

I gave an initial unboxing review a few years back, but never reviewed the slide post range fire. As mentioned in the last review, the red dot was extremely tight to seat to the slide. At the range, the slide was plagued with light primer strikes. The internals are all Glock OEM parts. After disassembly, i saw no flaws in the internal parts. After placing the parts back in the Glock slide, the pistol functioned flawlessly. I cant say what the cause of the light primer strikes was, but my hypothesis is that it is possibly caused by over spray of the cerakote inside the slide.