I replaced the regulator on my 69, unbolted the window and completely removed it for cleaning. You can finagle the rear bolt in the up and down positions, not easy. I wear an XL glove size and i got in and out with a lot of patience. Considered taking the garnish off but that could lead to other issues so I decided to go the blood sweat and tears method of shoving my hand up there with a open end wrench. One of my wrenches is still in the fender. Not worth ripping the car apart to get it, whats one more rattle.