You're right, infact it slid right out, thought it was molded part of it but yanked it out with tweezers (its been added to the folder on the previous link btw).
So let me get this straight, the suggestion is to bring the piece forward from its housing, its already a tight fit, is the thought behind it just to eliminate the "give" the piece has so it holds stronger, am I right?
I'll give this a shot, will report my findings in due time
Edit:For those who wish not to click the imgur link its a rectangular ringed shaped piece, gonna try some rods from old gundam model kit runners to see if that can prevent the give followed by adding something behind the bar