Personally I never have an issue snagging with any modern yoyos from like 2012 and on. I also silicone recess all of my yoyos, so gap widths have never been an issue at all.
It’s the first yoyo I’ve bought that I’ve actively had snagging issues. I didn’t think much of it cause I figured I could silicone recess and it would fix the issue. However, after a recess, I still snagged, and was forced to use Normal string which I only use for my FH1’s, Renegades, or YYJams.
No pads will help you, because 19mm “standard slim” are all gonna be the same size in thickness, the hardness isn’t going to help when the gap with is that tight. Silicone recess is the only way to open up the gap.