NO
i have been battling water leaks for ages. I cant find a sectioned diagram of the roof-gutter line anywhere so i could figure out where it leaks.
I have sealed my gutters fully with isoflex, the bugger still leaked, i sealed under the gutters with sikaflex, it still leaked, i then sealed the trim strip on, this stopped it!
At the rear quarter where the straight run turns the corner there is a stupid taped joint hiding under the trim, THIS was where the water was getting in, i covered it in sikaflex and it worked. The trim was funnelling water from the gutter to under the lip wher it was sucked into the split tape. This is why it never leaked with the trim removed, i'd refit it thinking all was well and it would start leaking again.
Thing that ****es me off is that i now have sikaflex along the the under-gutter line at the back and its visible because i got so ****ed off after chasing it for weeks that I just run the mother of all beads of sealant along and it sagged while drying
I might try cleaning it up in the summer.
It still leaks

but this time its the rear side windows, so they just need new rubbers fitting as they are both split at the corners.
Water leaks are a pain in the wotsit.