If there's some kind of throttling going on, I can't tell. I thought life throttling kept MWI above life curve anyway.

If there is no movement in life curve, I think there's no LTT -- I could be completely wrong about this, but then I usually am.

Another item that catches my eye is the Threshold vaule for MWI. It's set at 10, so maybe these drives aren't going to hit 9, and they'll simply stay at 10 for the rest of eternity.