Well I'm very old school, from memory of SU's the basic settings are 1 1/2 - 2 turns out for the jets as a starter. Then adjust to get smoothest and fastest idle, making sure they are done independently or on some set ups doing one will alter the other. Out for rich and in for weaker. tHrottle stops can be get approximately right by listening with a piece of hose or a vacuum gauge, dash pots must use thin oil not engine oil and Pistons should fall with a good clonk. All this of course is probably way out of date as a method and assumes everything else is ok with the engine and you don't have air leaks or worn spindles. The only guide to getting it right then was an engine that would idle nicely, pull well and a check of plug colour after a good run. All old hat now I guess.
