Oh, youre the guy from that other thread with too many plugins.
I havent looked at the backend of either readius or Familiar Friend, which is why I didnt recommend a switch but a removal. Doing it on a current save is a bit tricky iirc, so may as well save it for your next playthrough if you've already done tranq lane.
The merged version of More Perks from NVEC doesnt change any of the perks afaik, just merges them all into one plugin. Any changes it could concievably make would be easy to revert with fnvedit.
As i said, the RWL switch was personal preference, but if your main reason for using fellout is darker nights, pretty much every lighting overhaul does that and RWl is no exception. Its also more recently updated, with a properly done TTW version instead of a merge + cleanup that fellout has.
PN EO is just as modular as PN. It also has a merged plugin for the PN DLC additions so they dont take up 5 slots.
DLC WITM allows npcs to use the industrial hand. Ive no idea why they cant in the base game, but it may cause you issues at some point.
You have loads of what I personally consider junk in you load order and Im never going to download it all to check, so:
1. Get FNVEdit if you havent already
2. Load you entire load order
3. Right click any plugin on the left pane
4. Select other, then Create Merged Patch
5. Wait for it to finish then close fnvedit
^^This is mandatory for a load order with mods. Even more so with the number you have.
6. Start your game, check if H&H is still broken.
7. If it is, load entire load order in FNVEdit again. Expand the FalloutNV.esm
7. Expand Weapons
8. Click the "Name" column header to sort everything by name
9. Find H&H Tools Nail Gun and left click on it
10. See which mods edit it in the right pane.