Hi All, My 1988 Talbot Pilote R750 seems to be showing early signs of the sealing failing on the roof panels. Looks like they have been "improved" over time by adding more and more sealant. No sign yet of ingress but You never can tell!! Can one of You experts advise the best way to proceed with this problem. Do I take it all off and start again or is there a better way to go?? Advice appreciated, please.