Lines are bled, rears are adjusted, and as far as I can see, they aren't leaking.
Keep in mind this only happens during a hard stomp on the pedal. Pedal only looses boost then.
Tonight, I will try to get my hands on a vacuum gauge, or switch some hoses around, to see if the booster is getting the right amount of vacuum. Will report back.
@
spartacus
When your check valve went bad, was your hard pedal intermittent or constant?
THanks!
