'88-92 90 Climate Control-Oh S__t

[Steve Ensch]

Update-Last night I found the problem, vacuum flap for defrost/floor/vents
is out, will not hold vacuum.  In the process of removing the valve that
attaches to the flap control, I accidently broke off the piece that holds
the larger gear on/in the ventilation box.  I see a part number on the
piece, but what I am wondering is: has anyone else done this and is there a
cure?

Thanks,
Steve