Having had them with my 3800 PW marks are a $%^& PITA to remedy. Some papers, especially udder a heavy ink load start to distort and contact the wheels. the larger the sheet, the worse the distortion.
In addition there are copy variations between printers - one can have an issue with paper x, 12 others not. It's a crap shoot as to how your printer does with your fave papers and your typical pic and print size...
The front path, like the 38xx avoids the PW all together, but is a pain to use. After trying every remedy known to man I resorted to removing mine.
Will never by another printer w/o vacuum hold-down.