Yeah - these add-on charging jacks are often a problem - either can't get them to stay put, or can't get them out when you need to.

I'd say just glue the sucker in just now, and don't ever bother taking it out. When it's time to move your gear onto the next plane, just leave that old switch etc behind, and replace it buy one of the great combination switch & charge jacks such as the JR one (which works just fine with your Futaba gear BTW)

Gordon