Auto-up Window Reverses to soon

[Flyer1]

When using the auto-up feature of the drivers window, it sometimes encounters enough resistence that it stops and revereses. Is there a way to increase the safety threshold so it will put a little more "oopmh" into the window before reversing? Is the window motor going out? Perhaps I need to lubricate something in the window lift assembly?

Wondering if anyone else has had this problem. Tried searching the forums but came up empty.

Thanks,
Chip