All pillarless windows are adjustable, up/down - in/out - front/rear, but rollers also fail over time.
Adjust stoppers at top of door for height, adjustable bolts on vertical rails for in/out and slides in middle of door frame for front/rear.
I've replaced all 4x doors on my stagea and had to adjust so they sealed and didnt hit weather strip at top.
My drivers rear clunks whilst going up but think I left something loose! LOL
!!! Also have 4x spare regulators and windows with good rollers if needed !!!