TL;DR - After replacing the transmission seal on the transfer case input shaft, my leak disappeared for about three months. But, it's back, so I need to replace the seal again.Still dripping.
Still dripping.
When replacing the seal in the transmission where the input shaft of the transfer case connects to the output shaft of the transmission, I was super careful to ensure that I aligned the two components so the shaft wouldn't mar the surfaces of the seal. Or so I thought. I've got the same leak as before, so I'll be doing the job again. Oh, joy!