drove it around town, ran great and shifted fine. Level still a little low though. I think I prematurely drained too much out. I've found a few other threads documenting how the transfer case fills (one in particular that details what the transfer chain case does and doesn't do with ATF).
I'm guess, crudely, that ATF was getting pumped into the t case and making my level seem to change? coupled with the extreme loss of fluid from the trail damage, made it difficult to know how much space I had to fill?
Hopefully this thread will help someone in the future, if I'm wrong, please correct me so no one is mislead in the future.
*cheers to learning the hard way. on everything.