If this problem isn't alredy sorted, You should use Coke/Pepsi I read it in MBUK and tried it and it does work - I personally haven't tried this but my mate had loose grips and put pepsi on the bars and inside of the grips. He then put the grips on and left them over night to dry and in the morning they were stuck tight. If you want to get your grips off again, Just get a thin screwdriver, dip it in a glass of water and slide it under the grip and turn it around the handlebar. This loosens all grips. Good luck! (: