As if they are loose on the metal radio pins? I would just remove the knobs, rub some epoxy on the pins, and insert the carsmo knobs again.

Did you have any trouble getting your factory knobs off (without damaging them)?

I installed mine last week. Some came off easily but one was a bit harder. I was able to pull it off eventually by using four fingers. Each index and thumb. I was doing anything I could without having to use tools and potentially messing them up.

Great review. I did mine a few months back, and it was easier than I thought. I was scared that I would ruin the OEM knobs, so I covered them with a small polishing cloth and used pliers to remove them, and this came out successful!