It sounds like you didn't get quite all the air out when you pressure bled the calipers .

I hope you know to use a bottle and hose, bleed all four calipers beginning with the right rear, then the left rear then the right front and finish with the left front .

You must bleed each caliper until not only are there no bubbles coming out the end of the hose but clear fresh fluid is coming out too .

Many only want to use one little shortie bottle of cheap brake fluid and that's often not enough and you must never pour the bled out fluid back into the fluid reservoir .

__________________
-Nate
1982 240D 408,XXX miles
Ignorance is the mother of suspicion and fear is the father

I did then what I knew how to do ~ now that I know better I do better