Inferior metal to begin with combined with a high saturation of salt in the air...that is always present. A very fine steel wool with soapy water will help a little...then coat them with a light oil before storage. Its everything, imcluding the undercarriage and all the cheap metal fasteners they use during assembly.
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Now an SOB
Traded Thor for Melbourne Prestige 24NP
2018 THOR Chateau 35SF
Two Labs, Bugsie & Blondie
Blondie passed in 2020 at 5 to Leukemia
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