First build GR-1SF

Hey guys , I’m doing my first build ever and I started with the wiring circuit first.
I’m not worried about the body and finish because my dads a carpenter and he’s gonna help.
For the wiring
1- I followed th GR-1SF diagram provided by Pitbull Guitars and I get a weird buzzing noise. I followed it exactly. Any idea how to debug the problem?
2- why did they give me two transistors?

Welcome.

To debug wiring, we really need clear photos showing all the wiring and connections.

According to the wiring diagram, you should have received a capacitor for the tone control. I have no idea why you would get transistors. Can you read the markings on them? Or post a photo? It sounds like a mistake to me.