Hit knfeparty, I'm having exactly the same issue you had about a year ago with the seat belt bolt rubbing against the carpet on the center tunnel. I'm trying to figure out if the hole on the seatbelt receptacle is so small it fits only on the bolt, or is the hole on yours bigger and fits over the stud the bolt screws into?
I'm reusing the receptacle from electric seat onto the race seats, and the hole on my receptacle fits only over the bolt, so the bolt can't be tightened all the way in against the stud. Instead the receptacle is spacing the bolt away from the stud.
In the photo you posted of your disassembled parts, looks like your receptacle has the bigger hole to fit over the stud not just the bolt, but it's hard to tell from the photo.
Thanks for any help you can offer!
My email is
csmarx@gmail.com
Regards,
-Christian