You never said if this was a new in box engine but it really does not matter, that engine has not been produced in many years so even NIB engines have had plenty of opportunity to have had all the needle and screw positions tampered with. So you really need to start over on the start settings.

let me suggest for the midrange a simple system that has worked well for me on a wide variety of bleeder carb engine including that one. Just find a dressmakers pin (the fat ones) or a bent open large safety pin and insert the pin directly into the open hole in front of the carburetor. Now turn that adjustment screw in that is sticking out the side of the carb near the bleeder hole, until you feel it just touch the pin and that's it and is a reasonable starting position, finally just remove the pin.

John