Have you looked into awning repair tape?
Awning Repair Tape
People also use Eternabond tape to repair tears.
Upholstery shops can often fix awning fabrics. You'd likely have to remove the fabric for repair. I did on the two I had sewn.
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2022 Cedar Creek 345IK 5th Wheel•Solar & Inverter•2017 Ford F-Series SCREW 4x4•Factory Puck•B&W Companion•TST Tire Monitor w/Repeater•Sinemate 3500w Gen.
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