That sounds more like forward glass guide(s) binding. As the glass goes down the regulator is in effect trying to pull the upper guide out of the channel. This is why it will be the upper that eventually breaks in every case.
Top front of glass drops out, top rear of glass hit stainless against stainless every time the door is closed. Scars the stainless on the quarter glass too.
Hold the front of the glass fully into the vent window channel while operating up and down. If that relieves the bind...
Just for the sake of saying... If the parts behind the handle were worn out, you would feel it in that handle. Lost motion between rotation directions, handles wobbles and tilts to and from door panel.