Well, you got the 10spd now, right?
I am starting to think that there are several causes for the leak that all manifest themselves in the same areas:
1. Cracked window frames
2. Sealant voids around window
3. Leaking spoiler fasteners
My rear window was replaced back in Aug. even though the frame wasn't cracked. After they returned it to me, the leak was in a slightly different place, but still at the upper frame and it was worse.
Window guy came to my work and pulled headliner down (he cracked it) and then cap sealed all the bolts that hold the spoiler on. He also added additional sealant to the frame of the window from the inside of the cab. VERY sloppy work. Leak free so far. Just went out and checked, and it's been raining here for days in Savannah
I just feel if all three issues aren't addressed, you risk potential future leaks. Not to say that these fixes are permanent, but I think the spoiler attach bolts leaking is a bigger deal than we realize.