just like everyone else on here told me, you really can't give an exact while tuning a carb.   The spacer doesn't need to be in there you can rip that right out.  then depending on what kind of flow the engine has (exhaust/air intake) you change the idle circuit.   if you have a high flow or after-market air filter and a less restrictive exhaust you will most likely need to go up a jet size or two, just to get it right.  

as posted in this thread  LANCER has a good post telling an easy way for carb tuning-  Me having no former knowledge about carbs at all, i just followed directions and listened to the engine.



after it was all said and done,  i have no spacer, my stock jets, the mixture screw is 1 and 7/8ths turn out, and i have a jardine exhaust.

i still have yet to pull the plug and check it out, but it sounds great and doesn't have a rich running smell to it.


hope this is inspiring
-jordan