I am replacing my sliding screen door.
Old door used this roller assembly and with correct adjustment both top and bottom rollers fitted into it's tracks and door opened and closed smoothly.
New door I bought has adjustable expanders on top and bottom, with one inch metal rollers attached with rivet. Roller itself does not have any spring action (not adjustable), but you can adjust door height by adjusting expanders with screw.
My problem: even with top and bottom expanders adjusted to achieve full height possible, top roller wheels don't reach/run over top track. It is just shy of around 1/4 inch. Because of this, when I open and close the screen door, it kind of wobbles/rattles and its side frame bangs with edge of sliding glass door when I close the door after opening it all the way.