Yikes. The stories shared is exactly why I decided to perform the TSB myself after discovering I had a tainted/leaking rear window as well. The estimated 1.5 hours shown to complete the TSB isn’t nearly enough time to do the repair properly.
The seal on the window seems to be doing its job (for me, at least), but I was able to clearly see the cracks in the sliding window channel allowing water to enter the cabin. I suspect this would only get worse with time as the truck shifts and flexes from daily driving. Just curious, for those of you who’ve gotten ‘revised’ windows installed, can you tell if there is a seal at the top of the rear window - or maybe a different material was used for the channel?