Have the front and rear of my 2.0 kit together now, only ran into one issue with what appears to be the wrong Orings were included with the center diff. I spoke with Serpent America and emailed them pics last night.
I need to take my front diff back out and pull a shim or 2, it is to tight after getting everything on there, so i will also check the obvious that i don't have anything binding our out of alignment causing it as well.
The parts quality, fit and finish of this kit is as expected, which is AMAZINGLY good compared to other kits i have built.
Hopefully i will have it on the track this weekend, i have another Center diff (old Style) that i can run until i get the correct O rings