Just goes to show the importance of giving as much detail about the situation as you can think of, no matter how small.
If the key information had been included in your original post then the answer would have been far easier as it has been done many many times. Then again it would not have crossed your mind that it would be connected.
As said, very lucky you kept the old key cases.
It is much appreciated you return to the forum with the solution and will no doubt help others
