delta,
I read stevebfl's post about resetting the adaptation values. Too late for me to do that now. At least it looks like it will eventually adapt to a good setting.

aTOMic,
If it's not a vacuum leak, you may have dirty air getting to the MAS. Other than the obvious air filter, there is a big o-ring at the end of the MAS. You may want to verifiy that it was reinstalled when the MAS was replaced.