I've had a few people ask for the special shouldered screws that hold the rear docking connector onto the player unit.
These are known to sometimes come loose: they were either not correctly tightened at the factory, or they work loose.
The inevitable result is that the screws fall out and the connector hangs loose - this could cause a problem when you try to remove the player from the sled.
Can I suggest that you (occasionally) just check your player to make sure that the screws are secure. Don't overtighten them: if possible, put a drop of Loctite, or similar locking fluid on the thread, tighten to finger tightness with the
correct size Philips screwdriver (not Jeweller's screwdrivers, as they do not purchase correctly and can damage the head irreparably) and then give a slight twist to lock them in place. Allow the fluid time to set.
There is little remaining spare stock of this item, so please be careful with the ones you have!