I did one of these myself reasonably successfully. I hope you were extremely careful with the aluminum becase if its bent it will never lie flat. I'm not sure about the headliner glue- I suppose if MBZ put it there and it didn't leak for 20 years its OK.

As for using a "professional" - sure - if you can find one who will guarantee he won't break your window. I doubt you'll find one. What incentive does one of those guys have to be careful?

That said, this is a difficult piece. I have done 4 windows in my amateur career and this by far was the scariest. The glass is very thin and pretty curved. Stretching the rubber around the window was frightening. If you do it, I would line up a replacement window in a boneyard before you start. I did not use any MB sealant afterward and it doesn't leak (although it did for a month or two after I replaced it). Good luck.

And Boneheaddoc- stay tuned as I will be doing my W116 in the near future. I already have backup glass I got cheaply from the boneyard.

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