The window lifting arm pulling away from the regulator track is the reason I came up with the washers on the regulator mounting bolts. The goal is to have the arm directly under the glass and still next to the track for the entire travel of open to closed. I tested this by raising and lowering the glass while it is unbolted from the arm. The plastic pad in the middle of the arm should stay under the glass from top to bottom of the track. Then bolt the window tabs.
It does nothing for the window tilt. (separate fix) but it does help for the window pinching the rubber weatherstripping and pushing out of the weatherstripping. it does keep the arm next to the track. You will still notice a slight rockin of the arm due to the curve of the glass, but the arm will still stay close to the track.