I know spray paint was suppose to work well, I wouldn't use it though, what hairspray are you using? have you tried putting the right grip on the left to see if its the grip at fault? may be a faulty grip? Lynx always used to work for me.... Or double sided tape on the bar, wet it so the glue becomes slippy then slide the grip on, every time I used to do that i'd have to cut the grip off once everything was dry that is