Ok...is there a way to do teh following:

I have several printers that I want all my OU's in the tree (and man there
are a bunch) to be able to print to EXCEPT 2 or 3. Do I have to add every
OU specifically into the list and leave out those I do not want to be able
to print? There must be an easier way if I have multiple printers I need to
do this with.

I thought about adding the top most OU to the allow list and then maye do
an IRF against the OU's that I don't want to print. That doesn't work.
Printer rights don't inherit.