Check those grips

I just got back from a 1500 mile trip. The second day into my trip, I noticed that I was having some trouble with my lines. Initially, I attributed it to my bad wrist and, later, mental fatigue. It wasn't until today that I realised that my left handlebar grip was rotating every time I pushed on the bars. Apparently, my grip (s?) weren't glued at the factory, or they used water soluble glue....

Heads up, folks.

Regards,

DrJ