83 300SD Window off track

Today I shut the door on my 300SD with the window down for the first time, and wouldn't you know it, now it gets stuck about half way up. I pulled the door assembly off but can not figure out how to get the window back in the track, it is the leading edge (towards the front of the car) that has jumped the track. Does anyone have some advice, or a direction I can look to get my window back where it belongs? Thank you in advance for your attention to my problem.

Brad

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