I built my kit with issue free. I think i had to look at the book twice on screw sizes. Really the only part you need to make certain of is shimming on both the front and rear diff. Sometimes the shimming the manual calls for doesn't work. My original MBX7 was one shim opposite of the gear. My MBX7T required one on each side front and rear. This kit front was one on each side and rear was one on gear side.
Shim them until you have feel a high spot. 60-75% free and a light resistance for the rest is acceptable and it will lash in within the first few tanks.