I finally got the heater box out(with a lot of help from past posts here,thank you very much) and now I find there isn't a spec of foam
left anywhere in the unit. I purchased some HVAC metal tape which
leads to ? #1.
---Do I tape over all the holes on both flaps with holes?
----there is a small. squarish flap with no holes but it appears
to have had foam on both sides of it's "sealing" edge.
Is there a special type of foam that should be used or can
I just cut a small strip off the wall of my sound mixing room
and silicone adhesive it on?
I want to make sure to do everything correctly as I don't intend
to EVER do another heater core replacement, did I mention, EVER!