trunk leaks

I have a leak on the left hand side of the trunk above the wheel hump.Water runs down the trunk liner and eventually into the spare tire well.
There is a seam at this point an it is there where I can feel water.I went
around the window weatherstripping with silicon sealer but that did not
help.The dealer has tried twice without success.It also happens when
there is no rain but just condensation on a cool morning.
Any guesses?
Cope

I'm not sure If your problem is the same as mine was. On my 1989 Buick Century I had a trunk leak and the only way I could solve it was to replace the weatherstripping. It costs about $45 and you can install it in 5 minutes. Hope this helps.