Hi am working on replacing my HVAC plenum on my 06 F150, after being told about the foam that falls off and jams up the door that controls where the air blows out in the truck. I already have my dash off and have the HVAC exposed. My problem is that the HVAC seems stuck and I am looking for some tips on how to remove it to access the back bolts on the plenum itself. I was trying to avoid reclaiming the A/C, but that does not seem to be working for me as well. Any tips would be greatly appreciated, Thanks for any help.