Mine balances right at the delta ring, or close to. I have a WOA Wilson barrel on it right now, and no longer need a forend weight to balance it! And for some reason my buttstock wedge is wedged in place. Luckily there's only about 1/2 of one in there. All up it weighs about 14 pounds on our bow scale at work.
That said, I'm not sure a couple of wheel weights at the forward tip of the float tube wouldn't hurt. Just get it to tip so the muzzle doesn't bounce as hard when I get aggressive on the trigger offhand.