Only tighten the yoyo till it’s snug, then you should never have to worry about having your new one having the issue that stems from over tightening 
I would assume that you weren’t massively over tightening your original much ever, however just a little bit here and there probably led to the bump. Just go slow and be careful when taking it apart and putting it together. Personally I would go with what jhb said and ignore it but that’s just me