82nd and 101st Airborne limbs are offered with no warranty. This is a reflection of how the limbs are over stressed on these models. With this in mind, I recommend that you order 5 pound heavier limbs than the weight you want and back the limb bolts off 1.5 - 2 turns. Doing this will increase the life of your new limbs and not reduce performance significantly.
These limbs come with an assortment of spacers to use to position the cams within the limb tips. A good place to start is 2 of the .043 spacers on the cable guard side of the cam and 1 of the .050 spacers on the other side. Because your axles will be slightly long, a .060 spacer goes on the outside of each of the limb tips and the eclip is then installed.