me too
I had the same thing happen to me today. I was closing the roof and the handle came away in my hand. I took the plastic cover off when the roof was down and saw everything was loose. I've not had the guts, yet, too remove the unit from the roof itself but if it's dry this weekend, I'll give it a go. I took it to the Merc dealer near us and yups, he remembers repairing the same problem a few years ago but according to him, it's not a re-occurring problem ('my' and '****' comes to mind). Said he wasn't sure what the part would cost but if memory served him right, it's going to be around 800 smackers. Well, I can't afford it and with the B service well overdue and the rear brakes needing replacing, I'm afraid the thing is staying as it is, unless I can bodge it myself at the weekend.
If anyone else near Bridgend in South Wales has managed to remedy this problem without machine working the parts and can help a damsel in distress, please let me know!