Leezone,
I've just installed mine recently on the A5, all I did was added one or two washer on the side of the plate where the two screws are to hold the plate firmly in place.. As for the attachment area between cable and SSD unit itself, I don't think it will detach itself less some really serious shakin goin on..
I didn't experience any of Henni's problems luckily enough, but do remember to test the unit before closing it.
Good luck..
Ky