OK, I've fit the hood of my Kart barrel. I have been reading Sweeney's book on on gunsmithing pistols and revolvers, and I have a ?. Would I fit the lower lugs next or the upper lugs next? This is the firs time that I have done a g-smith fit barrel. It kind of makes sense to me to fit the lower lugs next, because if I fit the upper upper lugs next, wouldn't I possibly lose some of my engagement in the radial lugs? Confused.