Question on Boxster Window Regulator

hi , hoping you can help : just had a new regulator fitted to my drivers side window on my 986 boxster s 2002 , the window will drop fully with no problem and will rise to it's close position, it also drops slightly when opening the door and closes as it should so the motor is doing it's job fine . The problems are that i get a horrible squealing noise aswell as a slight struggle it eventually does get back up but as the window comes back up there are diagonal markings that look like the channel guide on my window potentially what's causing the sqealing noise , it also doesn't quite make the height of my passenger window in it's fully closed position falls around 5-7 mm short fully closed i'm hoping its some adjustments that you could perhaps advise , will adjusting the height screws from underneath fix this issue? or is it the other adjuster screws inside the door ? the regulator/motor seem to work correctly , it's just the issue of something making it difficult to come back up . Many thanks

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[Nick at Pelican Parts]

Check if it is in the guides correctly, or if the rubber part of the guide is misaligned.

- Nick