Loose spindle on Rega Planet?

I have an original Rega Planet that I like but have one serious quibble with this top loader. The clear plastic hinged lid has a black plastic button that is exposed and spins when the disc is played. The stem of this button attaches to a round magnet that secures and stabilizes the disc while playing. The stem has come loose from the magnet and when I force it back into position it sometime wobbles and is noisy. It takes lots of trial and error to get it adjusted just right. Has anyone else had this problem? It looks like a real fundamental design flaw.