It may be best for you to call Winnebago and ask them what they're using on new construction and repairs. Adhesives that work well between rubber and metal over large areas or where this is movement need to be done right the first time. Its no fun trying to clean the 'no-good' stuff off of rubber seals. Let us know what you find out - it sure helps others. Thanks ...
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Steve
2015 Itasca Ellipse QD | 2014 Jeep Grand Cherokee