Hello erez1063. I am sorry for the delay, it is our busiest time, biggest show this month, very important for January born/ringed youngsters.

My photo could not replicate the wire to ensure you understand, I made a little diagram to demonstrate the wire and bends, place feet ends into screw hole after squashing two sides/legs of wire to form one piece, U at one end, feet at the other. After pushing feet end, use pliers to hold, you can feel it will be locked in place by the threads, then bend wire upwards to sit into cover space and force the fit, it will then be perfect. If you follow my initial explanation after viewing the wire I am sure it will be clear, I hope so. Good luck and I promise, after you perfect this you will not use screw again. Your friend, Harold.