Setting up 34mm carb do i rejet black spark plug

[Birdylegs]

Where was the clip to start with?, where did you raise it too?, when you say high revs...what is it?, what throttle position ?

Second from top moved it to bottom it ran better but only got to seven rpm with two in second gear only done six k. than spluttored and at that point my brake pads and jets turned up my stepdad with socket set busy never looked at plug but turned down mixture screw and it idiles same as befor sun should be out to day to have a look.