It's 4 screws to remove the Kraton power module that had the motor and center diff then another 4 and you can get the diff out. The new V5 Kraton has only 4 screws that need to be removed for access to the center diff. The front and rear diff only need 4 screws to be removed and then you can...
I love my Kraton and there is a lot of extra chassis space for upgrades and possibly going to a 8s system! Definitely can take a beating and handles nicely. The Kraton is really easy to wench on if you are a beginner. Check out the Arrma forum. Diffs are really easy to access!