You can check the fast Idle screw under the choke assembly to confirm that it is not in contact with the choke fast idle cam.)by backing out the Idle speed screw until it is not in contact with the throttle stop lever.
Cycle the linkage again to be sure that the linkage comes to close without any assistance.
It is important to follow all linkage and lever installation instructions.
The number one and two reasons for tuning errors are improper linkage installations and over tightened linkage nut, causing a binding in linkage assembly.
See pictures and notes in the tech 2 article supplied in the kit instructions, view and please understand the need to keep throttle plate as near to closed as possible so as not to prematurely expose the transition holes.
If the speed screw has to be opened 2 or more turns then this is also an indication of a lean condition usually requiring greater change.
At times it may appear to be showing signs of richness or flooding it is really a lean condition.
AN ADVANTAGE OF THE WEBER CARBURETOR IS ITS EASE OF ADJUSTMENT AND TUNING.
All settings are done with choke disengaged or warmed up so that the choke is fully opened and disengaged.
CALIBRATIONS MAY VARY DUE TO REGIONAL FUELS AND STATE OF ENGINE TUNE AND PERFORMANCE.POOR RUNNING QUALITY DOES NOT MEAN A DEFECT IN THE CARBURETOR.