Nicely done Brian.


You can gain a bit more clearance by using Pal nuts.
They have less height than standard nuts.

Stainless steel washers are many times thinner than regular steel washers.

You can skip the lock washer and use blue LocTite instead.
As far as that goes, you can buy Pal nuts with nylock inserts in both stainless and regular steel.


And . . . if a guy had a lathe he could cut cut his own very thin Pal nuts from a regular stainless nut....