Battery Securing Clip

[blimp]

I broke my left wrist 6 weeks ago I could not drive as I could not release the hand break or change gear. I did run the engine twice over this time but when I got the pot off and tried to start the car it was totally dead I recharged the battery for a couple of hours and it started first time. Two days later I tried again and the battery was dead. After a longer charge and 10 miles or so the battery seems fine but with winter looming I decided to change it anyway. All went well until I tried to remove the clamp that holds the bottom of the battery. The bolt just turned and turned without the bracket coming loose. I removed the 3 bolts that hold the tray in and lifted it and the battery out in one. After lokking at the bottom of the tray I found that the bolt goes through a circular insert in the plastic which was just turning with the bolt. I've tried drilling through the plastic and into the insert and tried to secure it with a selftapper but no joy. So I'm going to have to run with the old battery until I can get a replacement tray. The moral of the story eventhough it can't be seen keep this bolt well greased. Why can't ford use square or hex inserts witch would get rid of the problem