I bought a Olympia AST 2 jacket and it leaks through the arm and chect vents. Olympia has replaced the jacket but the new one leaks in the same place. Looking at the construction it looks like the water leaks through the stiching for the zipper or the zipper itself. Olympia has recomended Scotchguard and Nikwax has told me that their products would not work as they for coating fabric and not sealing sewing holes. I'm also thinking of a seam sealer to see what happens. Has anyone had this happen and sealed it? Any input would be helpful. Thanks.