Kiss cut not done well on most

I like the vinyl and the quality of the vinyl appears to be good. Time will tell, as I have them on the back window of my SUV. The problem with the stickers is that I ordered the kiss cut stickers and a majority of the stickers do not have the kiss cut done well (not through the vinyl). This is especially problematic on the inside corners as it causes the vinyl to pull and become irregular on the corners. I’ve succumbed to cutting them with scissors which is the antithesis of what I wanted when I ordered them. Hoping the little stretch on the stickers doesn’t interfere with the adhesive or performance of the stickers as a whole. Also, when working with them on the proofs, be sure your illustrator file is exactly what you want because having them do renditions is tedious and often unproductive.