Yup...pretty much the way I did mine and will have to do it "again" in a day or two. Went with a plus 2 1/2" extra length this time for the Rivco Risers. The plus
1 1/2" was tight. I'll have to return it for repair as they failed to put the hard plastic bushing on one of the ferrules
I believe the Barnett cables are not metric. It seems as though I found the fittings were 5/16" on the adjuster and 7/16" on the nuts. I remember thinking I might have to add those to my tool bag. 13mm would work in a pinch.
One more thing...It was suggested in a post to remove the side shroud and screen. Good tip! I have noticed on my rockets that the shroud screws like to loosen up over time. I decided to put an ever so small amount of locktight blue on them. I didn't get to aggresive with that because the fittings are fastened to the radiator. You might keep a eye on those screws.