Gerald-
I think if his is as he described, and acting like mine, the problem isn't with the windshield to gasket, but rather gasket to front cap. The gasket wants to slightly bulge away from the cutout about 1/4 inch for a few inches just above a top corner, instead of laying down smooth against the cap surface. This effectively acts to actually gather rain running off the roof and funnel it inside, rather than diverting it aside.
Admittedly, I am not familiar with exactly how things are mounted in there. My original windshield didn't have the gap problem, but had been mismounted at the factory, and readily cracked while just stored the first winter, so I know there certainly is a trick to the job. The warranty replacement unit shows no sign of cracking or being stressed, but the gap developed between gasket and cap after a year. I presume repositioning the entire assembly slightly, however, might resolve the gap problem for both HiLarLee and myself, rather than just throwing sealant in the unsightly gap as we have been. The one-piece unit is not something I'd want to take on myself, for sure, and experienced techs would more likely know how much to move things and in which direction.