Does your repair kit come with the rubber cement (glue)? As far as I know, you suppose to apply the cement on the "牛筋" before you insert it into the hole. You suppose to cut the excess off, after you patched the hole. See link: kzbin.info/www/bejne/bWO2qp2Xfd11nqs&ab_channel=MotorcyclistMagazine Ride safe!