If these adjustments are done right the engine will hesitate slighlty when accelerating from a cold start . You will need to allow the engine to warm a little while before it will take the throttle.
Once warmed the throttle responce should be instantaneous. If not only richen low needle enough to get a good throttle response .

I would also advise to add a static vent line to carb diaghram vent . A quick search should get you a link to doing this .
This modification will reduce fuel mixture changes that happen when air born ( most engines will go much richer in the air than they were on the ground )

I know you have probably done these adjustments previously but try them as I have posted them and post your results .