There's a TSB instructing to use silicone sealant (preferably black) along the backside of both side and top windshield trim. I've done quite a few and haven't had any problems or comebacks at all. It's best to get it as close to the inside portion (where it contacts the window) as possible without going over. Should you go over, one quick wipe with a towel is all it takes.

Joel, CA