I've checked our '10 3665 several times and have not found any cracks anywhere. Also just purchased a Mor/Ryde wet bold kit (Amazon had the best price) and one of the brackets was misaligned when welded. Sent an email to Mor/Ryde and received TWO replacements in two days - even though I told them I wasn't installing the kit for a month or two. I'd say they've really good customer service and if I've a problem with the LRE system, I'll contact them first vs. asking an RV dealer that would love to make money off me.
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