Material Availability and Non Stock Non Qty Bearing Items 8.03.305F

We want to control some of our "C" class items on a 2 bin system but
we still want these items to appear on the pick list for the job and
for the cost of these items to continue to roll into the job cost. We
have tried setting these items up as non stock and non quantity
bearing and they do roll the cost but they are still showing short on
the material availability report and on the production planner's
workbench. Any ideas on how to set these up so they will roll the cost
to the job but not show short on the availability displays?