It just falls out when disassembling. Did it the first time I I took it apart. I've read where some were very tight but can't find any information of what to do when too lose. I hate to send it in so if there's another option I'd like to hear it.
Mine falls out too after disassembly but functions normally once the slide is reinstalled. It doesn't bother me a bit. Actually it makes cleaning a little bit easier.