vm 28 setting

running 28's on my 1075..currently has 122.5 mains and stock pilots..great out of the hole..but around 6-7000 rpm has a bit of a stutter..if cracked open she screams..carbs are completely rebuilt, and spottless..this is either a jetting issue or coil mod time..doesn't stutter bad but it is there..any opinions??

Do you mean it stutters at a steady
throttle 7000 rpm? If so raise the needles
one notch.If wfo at 6-7k a stutter comes
in I would go up on the mains.