Weve had our van since feb & it has a dealer warranty Last month we noticed a leak in wales in treaturus conditions (apologies for the grammar Google doesn't recognize my attempt) We found a leak in one rear window & it was on the side that was taking a beating so I pulled out the tools & tightened up the screws which slowed the leak down to almost nothing. I thought id give it some time to allow for any seepage that had already started to follow through. Well weve noticed no leaks since but its in the back of my mind now....... The question is Do i remove the offending window & re-seal it & is it worthwhile doing all the windows. What do you think ???????????