Loose HandleUpdated 2 years ago

First, there is a post that the grip is wrapped around. There is a screw that is inside this post, that mounts the handle to the frame. It is a 6MM hex head screw. If you pop off the endcap on the grip, you can use a long Allen wrench to tighten this screw. 

If this adjustment doesn't alleviate the slipping, you should try tightening the rings that are on either side of the grip. They should be a 3MM Allen screw.