It sounds easy enough. How do you change the needle position? Do you take the carb apart? Is it worth getting the carb manifold or just cut the stock bigger to open it up. I will just drill the exhuast tip out for now. All my riding will be between sea level and 4000 feet. Is 175 main and 68s pilot going to work good? I have never been into a carb before so I want to know what to look for when I take it apart.