Originally Posted by
vti-chris
One more thing...there are a few carbs around that the slider(LSN) won't exit completely from the barrel that sprays the fuel if you just set the EPA to the opening of the venturi...SO set EPA and idle gap with no venturi in and make sure as "ezveedub" said to leave 0.5-1mm free play on the throttle linkage when you are full throttle, for any chassis flex or engine moving.
This counts for the Speed carbs. The LSN never comes completely out of the idle bar/barrel inside. If you set the full throttle and idle gap to say a 6mm restictor, you're going to have one screwed up carb setting.