Bottom Wipe/seal

Our bedroom slide is soo drafty from the winds out of the west, should there be at least a wipe behind the bottom "D" seal should one be able see the rollers?
if so is there a part number are they two parts or all in one ?
See the other picture the down seal is flapping in the wind.
This slide is off set by at least 1/2ins maybe that's why the right side is taking more of the wear.
Den.

I'm thinking the actual seal to keep out wind is on the slide itself, going all around the inside part the keeps the slide from going out of the rig. It is the decorative part that hits the wall inside when you open the slide. Is your slide sitting square to the hole? That seal is all padded up and pretty thick.

Actually, on our bedroom slide, I have to physically move that bottom sweep to see the rollers. The on the bottom of the plywood slide floor is “normal” since there is a lot of weight riding on tiny rollers. Some have used sheet metal strips to provide a better wear surface.