My old (1991) Avon Dinghy is in pretty good shape except the rubrail is coming loose from the tubes. About two years ago I put it in an inflatable repair shop here in Ft. Myers, to have the rubrail reglued, but it is worse than ever today. About 4' is hanging loose on one side and 2' on the other. I would appreciate any info on how to reglue the rubrail to the tubes: type of glue, technique, etc.Thanks in advance.