The guide rail that sets the strut. (Best I can describe) I tried reglueing with pins and melting the plastic, but no luck. They do look like sturdy retracts, but a closer look showed that one of the breaks was diry. This tells me that it had been cracked for some time now.
For my first flight with this plane I locked down the retracts and didn't hook them up as i could not get the nose gear to lock down. It will retract just fine, but it seems that the servo doesnt have the torque to pull it off. but judging the servo tray and the airframe in general, it looks like its worked before.