RE: tuning screw
Your gunna hafta tune it every time you drive it. Every day its gunna be different. It all depends on weather. If its cold and dry, your gunna wanna richen it. Hot and humid, lean it. You can probably go to your LHS and see if they have a temp gauge. They help alot. A good starting point is LSN even with silver collar. and HSN 2 and 1/4 turns out. Also, i dont have the link, but go to Youtube and type in nitro tuning. Theres 2 great videos that show you exacly what to do