Many thanks Bill, a good guide (although it should really be entitled "Amal Concentrics" as there's not that much on monoblocs and pre-monoblocs.
I always see people suggesting starting tuning with the main jet - in fact that's what Amal recommend. As correctly said, this only affects wide open throttle so I prefer to start with a main jet I know is big enough (or even too big) and get all the other bits right before touching it. In my own case I rarely use WOT anyway.....
I've found that the slide cutaway is crucial in getting clean transition from idle to 1/4 or even 1/2 throttle which is where you tend to spend a lot of time. Unfortunately, slides are among the most expensive bits to swap although some people have had success by removing material from the flat face (reducing cutaway) or from the angle (increasing it).
