84-075 Rollers
Hello, thank you for posting,
There are a few things you could do. First check the track to make sure there are no notches or dents in the bottom screen track. Check to see that wheels are adjusted properly. When I adjust a patio screen door I first adjust the lower rollers so the door rolls and closes plumb to the jamb. Next I add tension to the upper rollers. Adjust the top rollers so that it keeps the door on the track, but not too tight that the patio screen door won't roller easily. Finally if all else fails make sure the rollers you just purchased are rolling easily.
Let us know if the issue persists!
Great to hear! Happy that we could assist. Please let us know if you have any future hardware questions!