Hey Guest!
Hey - did you know if you click on the title of a thread it will take you to the first unread post since you last visited that thread?
but were afraid to ask: 
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smilie in place of the real @
Pretty Please - add it to our Events forum(s) and add to the calendar! >> 
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The MG guy whose name escapes me right now (I remember now John Twist) has some great videos on tuning on U Tube, including SU carb tuning as I recall.
I think the lif the pin trick is ok and helpful, but the tiny little bit you are supposed to lift the piston with the motor running (and vibrating) always seemed a little problematic to me.
I tune as best I can with the lift the piston trick, then if needed fine tune under operating conditions, if you happen to be blessed to live in a place where it gets cold the car should need a little choke to start, but after a few minutes should rev up without hesitation, if it needs little or no choke to start and revs with no hesitation it is probably too rich, if it takes forever to smooth out on acceleration on never does too lean.
I think the lif the pin trick is ok and helpful, but the tiny little bit you are supposed to lift the piston with the motor running (and vibrating) always seemed a little problematic to me.
I tune as best I can with the lift the piston trick, then if needed fine tune under operating conditions, if you happen to be blessed to live in a place where it gets cold the car should need a little choke to start, but after a few minutes should rev up without hesitation, if it needs little or no choke to start and revs with no hesitation it is probably too rich, if it takes forever to smooth out on acceleration on never does too lean.