I have taken the carb off 3 times. Put a new 17.5 pilot in it. Removed fuel screw, main, pilot, little brass jets inside the back opening of carb, blown carb cleaner through everything. Visually checked that slide is opening and closing during throttle movement. Checked intake valve, it is within tolerances. Fuel screw 1.5 turns out. Float is good. I messed it up one time during this process, and it was flowing fuel out of the overflow when the petcock was on. I took it off and put the float and needle back correctly, no problem with that now. Symptoms: Was running fine, putting along, died. Would not start back up. But then I figured out how to at least start it. Here is what it does. Crack the throttle just a bit, maybe 1/8 inch of cable pull. Bike starts and will continue to run at about, Im guessing 2500 rpm. Sounds great. Twist a little more throttle, no change in rpm. Twist more throttle, no change in rpm. Wide open, it will stall from the same rpm as earlier. Close the throttle, it will die from the same 2500 rpm. It will only run at one rpm (2500?), with just a tad bit of throttle open. I am sure the slide is moving up and down, and the throttle cables are fine. I am ready for your thoughts. Thanks!