Jetting for a 350 Mach 3

[Tyrefryer]

I have an Amal Concentric Mark 2 fitted to my 1973 Mach 3 350 and I'm trying to order an overrhaul kit from Amal. I need to specify the jetting I require and though I have the original jetting and Mick Walker reccomended jetting in the Haynes manual, these don't correspond with the Amal jet sizes?

The sizes in the Haynes manual state:

Pilot jet: original - 40, Mick Walker reccomendation - 50
Main jet: original - 115, Mick Walker reccomendation - 125
Needle jet: 265M

The sizes in the Amal list are nothing like these, the existing main jet I have is 230. And I don't apear to have a pilot jet in the carb, just a pilot blanking screw, why would this be the case?

I don't really want to just order what is already in the carb as these may be completely wrong, (I've never had the bike running).

Any help would be greatly appreciated.

Cheers, Martin.