HandBrake Lever Bolt, Am I missing something? Options

[bperry]

After many years I'm repairing my handbrake (repairing broken pivot on handbrake stand)
and while I've not changed the hex head bolt from the way I bought the car 28 years ago,
I can't help but feel that it isn't correct or that something is missing.
There seems to be something not quite correct
in the way things fit together.
I'm wondering if the bolt should be a shoulder bolt of if I'm missing some sort of stand off
that sleeves the bolt.

Below is a bottom view of the handbrake stand with the bolt going through the ratchet.
It is loose but you can see that there is a threaded area that is inside the hole for the ratchet.


If you look at the parts diagram:


There is a hex bolt. Item #18 part number 900 075 085 02
It is listed as a "Hexagon head bolt M8x20".

Then there is item #17 part number 900 027 015 02
It is listed as "Lock ring B 8"
Is this a standoff/bushing or just a simple lock washer?

So my question what it is supposed to be there?
- A special shoulder bolt
- A M8x20 bolt with a special standoff/bushing (Is that what item #17 is?)
- A M8x20 bolt that is just cranked down with a lock washer (what was there but doesn't seem correct)

The reason I'm asking is that the hole in the ratchet seems larger than necessary given
the bolt size and it seems odd to have bare threads exposed to the ratchet. Plus the
lever seems like it would be more stable if the hole closer matched the bolt size or used
some sort of standoff/bushing.

--- bill