with my trans ive found its best to have a little less fluid than too much.
the white truck trans will cruise around 160-170 on the highway when it was 100-105* outside and hot lapping it will go to 190-200 and chill there. even on my back to back 10 sec passes.
Try running equal tire pressure all the way around.
I don't quite understand what people think you need more pressure in the front.
look how much more load in on your rear tires here. your t-case is just fighting you the whole way down.
I went faster when I took this advise from Rob and...
X2.
Scott is one of the best people in the industry to deal with. I talk to him on a daily basis. Yes he is pretty back logged but his stuff is WELL worth it. quality, attention to detail, the list goes on...