i recently got my yzf, my first bike in seven years. anyways when it gets warmed up or hot in that 80c and up range it wants to idle at around 4k. if i'm riding it i can idle it down by applying the brake and puting a load on the motor. i have been told vacume leak, i cant seem to find one yet anyways. i did find one thing odd, when i took the tank off the 2 breather hoses off the float side of the carb were just laying there under the tank. one has a barbd fiting in it. the service manual shows the 2 of them going together into some sort of union, but does not show the union.