Hi
Fit a Comstock reed breather otherwise you will have a leaky beast if you run high road speeds., from my experience at least.
David from NOC on my Combat Eng/Frame No. 204XXX.
"There is not much listed for Commandos as you are probably aware. All I can tell you is that your machine was shipped from the Factory on 24th March 1972 as an Interstate model to the agent Elite Motors of Tooting, London.
As your Vin plate shows Feb 1972, that would be the build date.
It seems that somewhere along the line its identity was changed to a Fastback"
I often play with the idea of turning back into an Interstate by kind of like the Fastback now.
I am running Emgo pistons in mine, dropped the compression back a bit as old legs had trouble kicking it over, fitted Trispark, new 32mm Amal Concentric carbs starts runs great.
Burgs