Bio's right. Most everyone with out a lid is running 155 pilot jet. Some even change the main to 25. A member here has the pics of the carb apart.[/b]
You guys that are not adjusting the needle coule run into overheating problems. I still run with my lid (no snorkle baffle, though) and I have a 25 pilot, Alba needle at #4 and a 145 main and I'm still a little lean (just a tad, lets say bleeding edge).
That glowing header... too lean in the mid. I'd get an Alba (or another adjustable needle) and tune it richer that what stock is.
You can't just up the main and expect it to solve problems in the mid throttle range. It doesn't work that way. One of these days you'll be riding along and puffing a lot of smoke because you warped your cylinder.[/b]