Thank you for the information. Let me be more specific. I have a 1958
FC 22'. There is no canister, alumashield, rollers or arms. I have an old airstream and this was before any of these things. So It literally has a plastic tab all along one side that you slide in a railing on the trailer and then manually put up polle and tie down ropes like on a tent
The plastic piece slides into the trailer rail and then you set up outside pieces. See above link for photos. I am unable to get the plastic piece to slide out of the railing. Any ideas? Anyone have this age trailer that has ideas? Use WD40?