I replaced the grips on my bike last summer. I used hair spray as the glue to hold them in place. I have used it many times over the years. The left side has been perfect. The throttle has come loose three times now. 1st time I used hair spray again, 2nd I used a small tube of grip glue I bought at a dealer. Well, it is loose again. And yes I cleaned it off of any old glue each time. Any thoughts or wisdom? Thanks!