Hey all! Sorry, been a rough few months!!
Jamc..
To answer your last question… Yes! Adding or soldering on some wire extensions can add resistance to the circuit! If you can, I would run a single negative from tube connection, to network, to tweeter… (don’t have schematic.. don’t know if this tweeter is out of phase, but rule is still in place! The positive won’t be a single line from tube to network to tweeter… because the parts (cap resistors and such) break it up. Pay close attention to phase!
As far as the no res goes… I’ve seen people lay the full-top area that’s open bottom and sides with no res… I’ve also seen just the bottom. Think Peter has a good visual aid. I’m sure some photos are on the forums here. If you get stuck in the middle of the night, just search. Might work.
23ga nails, brads… Nope! As mentioned, they will shoot out the sides all goofy like! solid MDF or the lighter particle board I’ve seen same results! A good glue and clamp should work. Just to re-confirm the above.