Lots of good advise above.
Adding and reitterating....
1) cleanliness
Make sure everything the screen door is sliding along is clean. I would not lubricate anything, except as a last resort.
2) alignment
Make sure the leading rigid bar you grab to slide, is aligned properly to the door frame and also to the screen housing.
3) bunching of excess screen material is binding
Maybe the binding is excessive screen material that has wandered toward the top or bottom of the screen roll, causing resistence inside the assembly.
Looking at the screen assembly on my 2007 2350, that screen housing is simply mounted into the door frame with screws. You might have to remove the screen assembly, lay it flat on the ground, have one person hold the assembly while another person pulls the screen all the way out. Then slowly retract the screen material back into the assembly nicely aligned.
Come to think of it, you might be able to do that while it's in the door frame. It would be tricky though. Have one person up top, the other down bottom, pulling the extra screen material all the way out, then carefully letting the spring pull it all back in while you feed it in well aligned. Don't let the screen material wander off center, going beyond the roll on top or bottom.