I have a 1984 190 D that has the "drop down" style sunroof ( I think ), when you hit the switch it will pull back about an inch and the rear of the roof will drop down a half of inch and then stick. There is a gear grinding noise that comes from the motor assembly in the trunk. I can manually crank the sunroof back to Closed, but cannot open it ( a chore not having the tool ). Motor, cable...? Not an issue in this weather, but come spring...

Also where is a good place to get the power antenna from?

Many thanks and Happy Motoring.