Was roof replaced? If so, covers probably removed and not properly wound/ rewound? My rig was 17-yo when I bought, found awning not properly rewound/tensioned when roof replaced and (when floor replaced) barrel chair was mounted backwards on swivel base w/ seatbelt to little 1/4" bolts on slide-track mount vs 3/4" bolts for seatbelt on swivel FRAME; most other issues also had poor repair procedures related issues. Carefree awning/ or slide awning online you can download instructions/ winding chart.
(TerryH.) 2000-GS Conquest Limited 6266 Class-C 99-E450SD V10