Honda-SOHC

First thing to do is remove the kickstart lever from the shaft and inspect the splines. You will quickly tell if the splines are worn on the shaft or the lever knuckle.
If the kickstart lever is u/s a replacement will be hard to find. CB350F levers are slightly different but fit and are easier to find.

In the sealed bag with all the brackets & fittings was this Grommet.

Could it be an item used on different models that the exhuast also fits so it replaces the square one in silencer pipe two?

Exhibit 1 by Macabe Thiele, on Flickr

Nope, never had that bit in the box Ted, everything that was in with the exhausts is in the photo above. I wonder what that is 🤔🤔🤔🤔🤔

In the sealed bag with all the brackets & fittings was this Grommet.

Could it be an item used on different models that the exhuast also fits so it replaces the square one in silencer pipe two?

Exhibit 1 by Macabe Thiele, on Flickr

I will Bryan, at the moment the yellow & blue wires from the points are disconnected . it's not connected as I used the test lamp method to do static timing.
I intend to find tune that before I try first start up.

Thats what i remember, rubber boot in space at top right of battery as you look at it.

Ted, before you try running the motor check that the blue and yellow from points are plugged in inside that boot, several times i have been caught out when i have mad last minute alterations somewhere and one of thos has pulled out so it only fires on 2!