This is for Beeq, I mentioned this addon during our chat in isboxer irc.

Found a working, relatively updated copy on Github

Old version - https://mods.curse.com/addons/wow/topfit

Latest version - https://github.com/Mirroar/TopFit - download the master

You will want to force the addon to use your spec weapon. Unequip the weapon. Hover over the slot with Alt pressed and you will see your possible weapons. The lower left corner is a checkbox, select your artifact weapon for your spec.

@jabberie