Quote Originally Posted by Scrape View Post
When the safety is off it has play in it because there is no spring and ball detent to hold the position securely and is loose and floating. Maybe someone here is familiar with this modification?
It could be that the part of the safety that goes into the bolt shroud has a very small hole drilled through it. If you remove it, a piece of heavy monofilament or nylon string trimmer cord the same diameter of the hole can be pushed through the hole and then heated well before the safety is pushed back into the shroud. It will then form itself to the bore of the shroud removing the play from it as it becomes squashed out.

You may also be able to gently polish the pick up cam while its apart to improve function just by removing small burrs