Cargo bays won't shield anything

[Muttzor]

EDIT - partially solved: although nothing ever shows as "shielded" in the debug menu (under fairings OR in cargo bays), parts properly stowed in STOCK cargo bays are showing no drag once the craft gets going. Looks like an issue of bays added in mods (as far as drag actually being applied to stowed parts).  I don't know how to delete a post, but someone who can may want to knock this one out.

 

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I posted this on the modded forum and got no replies, so I'm trying it here, as I've had the same problem on a brand new install as well.

I've searched and cannot find why my cargo bays won't shield anything from drag.  I've knocked out all the usual suspects I can find, and here's what I've done:

1.  I've used different types of cargo bays, mk 2, all the mk 3s (and some OPT ones before my clean install)

2. NO clipping anywhere.

3. Internal parts attached to nodes inside cargo bay.

4. Tried different parts

5. No external parts attached to cargo bays except inline by external nodes. For testing used fuel tanks of same type as cargo bay attached to either end with one random tester part inside bay attached to internal node, nothing else but landing legs attached to fuel tanks and maybe a drone core attached to a fuel tank to allow actuation of bay doors.

I load it up on the runway, look inside bay and parts (using debug menu) are showing NO for "shielded." Open and close bay doors, no difference.

I haven't played the game in days because space planes are what I'm doing at this point, and useless cargo bays ruin space planes IMO.

Please help?

Edited July 19, 2017 by Muttzor
partially solved