Thanks , just checked it out now. Looks like whoever got in there before screwed things up. Screw there now is Philips and does not tighten, will snug but spins which indicates it is the wrong thread. Will work for now but I'll pick up a few metric Allen screws and disassemble the whole thing in the next week or two, may need to re-tap etc for a proper fix.

Definitely looks like a "there I fixed it!" Duct tape type fix previous owner or service place used.
At least it will not dangle now.
Thanks
Paul