Senior Team Emeritus
Another one with no hints!
dimwatt said:I believe there's a clue in the name of the picture - Nylock.jpg - it's a nylon locking nut.
It's difficult to tell from the picture, but I'm guessing the blue bit is the nylon locking part. If that's the case then I think one problem is that the nut hasn't been put far enough onto the bolt and so the nylon isn't able to do its job.
Am I close?