Quick note of caution:
The pitcher editor is still broken, so when you edit one rating, it will effect the others in odd ways.
This may be okay, considering that the ratings still seem to have been balanced (if poorly) to accomdate the pitcher's former performance level. If you can just suspend disbelief, go ahead and edit them as detailed above.
I'm waiting until the editor is fixed for my solo league, but my team owners from the league I'm commish for asked for me to use my "best judgement" to fudge the numbers around a bit. What I wound up doing was re-importing the league under a different name and trying to get the numbers to match up the best I could for everyone it impacted - a very long, tedious, AND thankless job.
- Dan