by LRM » Wed Apr 15, 2020 9:03 am
No you should not have to re-jet if it is correct/the way you want now.
Yes you turn the dolly screw clockwise to increase the preload on the PV spring. This make the PV open later in the RPM range. Thus making the motor respond to throttle input slower, giving more bottom in a lugging ability.
Turning the dolly screw counter clockwise makes the motor more hyper, like for use on an MX track
A little at a time is best for determining what you like. 1/8-1/4 turn per adjustment.
The only time you need he 2nd Amendment, is when someone comes to take I away!