My suggestion is to take out the FLGR and replace it with a Standard GI Guide Rod and Plug (for the bushing end).
Four reasons for this:
1. Two piece guide rods get loose (you know this).
2. FLGR's have no effect on accuracy or performance (you may not know this).
3. FLGR's require a tool to take down and re-assemble the pistol (you know this).
4. Standard GR's and plugs require no tool to take down and re-assemble the pistol and is the way the gun was designed by JMB (you know this now).