This is either because of 4 things
Bad string tension - Yes, if you have tight string tension, the strings will try their best to wind up around the yoyo, and cause it to snag. It also makes it harder to slide across your fingers.
Sweaty/Sticky Fingers - Yes, sticky/sweaty fingers makes the strings unable to slide across your fingers. In fact, sliding the yoyo in a trapeze is a way to wind up your yoyo. If you have smooth fingers, the string will slide across, and it wont wind up. If you pinch the string or have sticky fingers, it will wind up. Wash your hands before yoyoing, and dry them thoroughly.
Wrong throw - Yes, some people can’t do breakaways, so they do sleepers instead, and this makes the spin of the yoyo against the direction that the string is moving, so it winds up more easily.
Uber Tight gap - Yes, if you have an uber tight gap, loosen it a bit.
Just pointing out something here.
How on earth is this the kk’s fault!!??!/!??! The kk was made for unresponsiveness and more string layers. The kk centers all the strings, keeping them from the response, so it makes it able to take more string layers. Putting a normal bearing shouldn’t solve the problem.
No, im not trying to sound angry and against you, just pointing out.
EDIT: I stated about how this can be used to wind a yoyo up right? Heres a video of Jayyo explaining it. This is what happens when you’re doing skin the gerbil. Bad string tension and sticky fingers will do this.