anyone else have problems with the vinyl caps on the repro deluxe seat buttons popping off? mine have done this at least a dozen times despite my attaching them with super glue or epoxy. anyone have suggestions for something that might keep them on? im thinking something that is somewhat flexible would work best..

I sure like that black butyl sealant that you use on windshields as a multi-purpose adhesive. I've used it on all kinds of things. You use it with a caulking gun. Its sticky when first applied, very tough when dry, and its flexible because its butyl rubber!! Good luck!