Versant 180 Buslted Fiery will not print out of tray 6 or 7. No error

I have a versant 180 with a bustled Fiery.  It worked with tray 6-7 at one time.  Now everytime I print out of CWS out of those trays there is not an error it just says waiting in the printing tab.  It will never print or give an error.  The paper in those trays are recognized in the Fiery.  I can print from those trays if I make a copy.  Any assistance would be greatly appreciated.