Thats how I broke my old one. They ratchet. Use a screw driver or punch and push the end straight out, then stick it back in through the hole where the bolt goes. It's simply a one way ratchet. There is a bit on a "blockage" when fully retracted to it won't fly out if the spring is still in. Just give the screwdriver or punch a good tap and it should come right out.

__________________
Adam Lumsden
(83) 300D
Vice-President of the MBCA International Stars Section