Chevrolet Repair: 94 Chev Beretta defrost not blowing much, actuator, chev

Question
When i turn on the defrost it does not blow much onto the windshield. It does not matter how much i adjust the fan, makes no difference.  Blower is new (although before the old one died it was still the same problem). When adjusting to blow air out vents or floor it blows very well, just not out of the defrost to the windshield.  
help!

Answer
Hi Larry... check to see if anything has fallen down thru defrost and is jaming the vent door...if not that check the actuator and see if it moving all the way...to see if it is opening and closing the door all the way...if not could be a bad actuator...hope this helps