My girl just had a issue with her 250 ninja petcock, Check vacuum line running from the carb up. The fuel main feed line from the pet cock off the carb and see what position is off and prime dont use res only when you are ride and low on gas.
You can find them cheaper. cheaper then dirt it control the power that gos to the led only work for the rear tail lights. front blinker LEDs have to change the flasher relay.
You need inline LED resistors hooked up to the tail lights hope you didn't blow them out 2 pcs Resistors 6 Ohm 50W 50W resistors x 2 sold as pair designed to prevent fast flashing of turn sginals when wiring LED to... $19.99
I was thinking about getting another hayabusa just for the track thank for the input have to think about it. A winter project set up a bike for the track. I was reading some one said to down size the tire from 190 to a 180 and to lift the rear by 1 inch.