Yup, been doing the proceedure as instructed. When I turn the mixture screw in, it starts to rev up at 1/2 turns out from close. Backed it out another 1/4 turn till it idled smoothly again. Thats how i got 3/4 turn out from closed with the mixture screw.

Turning out the mixture screw from 3/4 to past 3 turns does nothing to the engine. The idle still stays the same.