Know what the factory specs are, these are at max poundage. Photos are a great idea. Vapor trial string will require some shooting in so if after you install the specs are close shoot 25-50 arrows before you make your final adjustments. You still may get some movement later but with VT strings it is not too common. Now your Guardian has a binary cam system. The cams need to be synced at full draw and NOT by using the dots on the cam, this allows you to account for differences in limb deflections.