1986 drivers window off-track

Hello. I recently bought an 86 bonneville door to replace one on my 86 olds 88. Anyway, the window is off it's track along the edge of the window so that when i try to roll it down or up (electric) the window comes out of the frame sideways.

I bought a new clip to put on the window to hold it in track but I can't seem to get the clip to stay on the glass enough to get it into the track all the way, even with a bit of grease.

Any thoughts?