Two ounces is indeed a lot more weight than usual on a tubeless tire.
No, you should not balance with the sprocket and carrier mounted. Without the tightened axle, the sprocket carrier will be loose and will cock to one side. That may explain your results. They're very close to the center, so the sprocket and carrier won't make much, if any difference to the wheel balance.
I'd check again without the sprocket and carrier.
While you're there, you might also check with a piece of wire to see if there's dirt or whatever inside one of the wheel "spokes". They're hollow, so it is remotely possible for stuff to get in there.
If you wanted to be really thorough, you could remove the tire and see how balanced the bare wheel is and where the true heavy spot is.
I've found that on vintage bikes with tubeless wheels, the true heavy spot is often not where the valve stem is, so I mark the true heavy spot and then mount tires with the dot in that position (and sooner or later, some squeaker at a gas station will spot my "mistake" and cry out with glee...).
On most modern bikes, like the Stroms, you can pretty much count on the heavy spot being at the valve stem. It's definitely worth checking at some point to make sure this is true for your bike. But that can certainly wait until the next tire change.
2002 Suzuki DL1000 V-Strom, Dark Metallic Space Blue
1983 Suzuki GS850G, Cosmic Blue
2005 KLR685, Aztec Red - Turd II.2, the ReReTurdening