Re: XF Electric Windows
in my old XE ESP with leccy window i changed the right rear motor assy (with second hand ones of course from other doors)many times now i don't like em.
the problem i had was also due to water stuufing the motor
but gad problems with the 3 plastic rollers inside the assy disintergrating, best solution to the problem will make most cry but i filled the space where they came from with fibreglass bog. works a treat lasted at least the 3 years i had the car on drivers door. i cant remember pulling the thing down and seeing a ball bearing though so maybe no help with your problem. easier to just get another assy.