While at rpm or idle ?

It is possible you have a internal mechanical issue We would recommend taking it to your local service provider for diagnosis. Low compression carburettor problems and electrical faults can cause a similar problem

Sounds like it’s not running on both cylinders- check coil

The amount of turns will vary with the altitude you operate at the timing settings and the throttle settings together. A bog down in acceleration generally points to various other mechanical issues. We would recommend attending a service provider to tune it for you.