These are frustrating little yoke wheels made of rubber.
When you tighten the yoke screw down to the valve, the rubber starts to spin, and you cannot get a good and tight seal on the valve.
Any suggestions for fixing this.
I thought they might pry off, but they look like a tight fit, and not much ability to flex. I dont want to try prying it off because i dont have a replacement rubber wheel in case i bugger it up
Any ideas