My suggestion is that you have another go at dialing it in. A reasonable assessment of the mixture strength can't be made until the amount of flow at the idle hole has been established. That can't be done until we are assured that there is zero flow from the enrichment hole... and that can't be done until the throttle plate is set as close to closed as is possible.
While using the Redline guideline don't regulate either of the screws by the curb idle speed. In other words what you get is what you should report. The most important finding/report is the resting position of the speed and mix screws.
A Lean Best setting is not the fastest idle speed, its the sweet spot that only an intermittent lean misfire is heard.
Once the engine is completely warmed so that the choke plate is fully opened set the speed screw to a point that is between 1-1/4 to a max of 1-1/2 turns in once the tip of that screw has made contact with the stop lever, so that the throttle lever is first caused to budge.
Then start with the mix screw at say 3 turns out and work it in at 1/4 turns allowing time between each adjustment so that the engine will have time to react to each adjustment. Once the screw reaches the point that a rather constant misfire is heard back it out to that point that the misfire is heard at say each 5-8 seconds.
The much published 1-1/2 maximum speed screw setting is in reference to that point that one should be assured to see vacuum at the 'S" port nipple... that one that is farthest away from the mix screw.
Here is a guide that will indicate the stop, painted red.