I don't know the type of door involved here, but the cargo door on my trailer was warped and wouldn't close well - I just gently bent it back into shape. It's been fine since. My door is a simple aluminum frame with fairly flexible material making up the door part.
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2022 Cedar Creek Champagne 38EL - "Big Bertha"
2019 GMC Sierra 3500 Denali HD 6.6L Duramax TD, CC, 4WD, DRW - "Mr. Beefy"
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