Smagged it all back up and re fitted seal and ally moulding. Smagged all the screw holes first. One of those jobs , took all day, got everthing good and clean, all the screws bit, everything up good and tight, masked up to keep smag lines neat, happy with result.
17 yr old motorhome, still in tip top condition. Tomorrow to fit new screw cover trim (herzim) trim from seals direct. . Means removing rear light clusters but hey ho.