Those levels still seem quite frightening. Even with the grinding you did, they're still 2 or 3 levels higher than your (I'm assuming) all-star team, and that's not even counting the rest of the things stacked against you. I would suggest grinding more, but you've already been at it for quite a while...

Got no choice but to tough it out, it seems. Or spend another day or two grinding, but that'd get boring pretty quick.