[bytor666]

I recently picked up a 7mm Pentax XL. I know that with the XL's and XW's that you screw the eyecup up or down to get just the right eye relief. Mine does screw up or down but it is quite loose.

I just recently discovered that I can take the rubber eyecup off and unscrew the aluminum piece that the eyecup sits on. What I need to know is what I should use to make the threads a bit tighter and smoother for better action when screwing the eyecup up or down.
Attached is a pic after removing both parts. I have since put it all back together for now until I find out the correct way of rectifying this minor problem.

Does anybody know what I should do?

Thanks in adavance;

-Mark