I am trying to repair a rust condition on my 86 420sel on the bottom of the rear windshield. How hard a job is this to remove the rear windshield? Do I have to replace the seal after the windshield is removed? I search the archive here, but no step by step instruction. Don't want to break the glass in the process. Last time I check, it was about a $1000 for it.

Thanks,
John