The automotive touchup paint is probably lacquer. The original paint on the trailer may be enamel. Lacquer over enamel can cause the enamel to crinkle up. You could try applying many very thin coats.
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2013 Silverado 2500HD LTZ CC 6.6L Duramax Diesel
2023 Rockwood 2445WS
Buster, miniature Dachshund
2024: 2 trips, 26 nights in 8 states, 4801 miles
2023: 9 trips, 48 nights in 12 states, 2 provinces, 8120 miles
2019: 7 trips, 43 nights in 6 states, 3904 miles
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