Not sure if it's been mentioned already, but:
Selecting something and pressing the 1 key will toggle visibility for the selected item in CK only. It goes like, Solid -> See-through -> Hidden -> Solid... etc.
Pressing Alt-1 will make visible again anything that you have hidden in this way.
This only affects CK and only for the current session. It will not affect visibility in game.
Comes in quite handy sometimes.
Oh, no, I had to remove the item from the game. In the 114 gear room there are a bunch of big blue shipping crates piled up right near the door control platform. You can scrap two of the three without issue, but the third one causes graphics glitches. Removing it in the CK and regenerating precombine and previs fixed the problem.
I'll undoubtedly find more of these as I go, in all the vaults. I'm reworking my approach (one mod per vault as opposed to a unified patch file) so it will take me a bit to find all the offending crap. New save game and having to clear all the vanilla vaults (75, 95, 114) and Vault-Tec Regional HQ first so I can test my tweaks, etc. I've got 111 pretty much covered, probably hit VT HQ next as it's an easy clear.