Whats the deal with my grips and buttons coming loose?

I have noticed that both sides of my handlebar grips including the turn signals and the starting button on the other side are creeping away from where they go. I have pushed them back but the keep coming down. Is there a way to tighten them?

Thanks in advance for your help.

David

 

If you remove the controls and wrap some electrical tape around the bars where they mount, that will give the controls something to "bite" onto. They should stay put that way.

 

I'll try that. Thanks.