what kit did you get? because those long needles are probably stock and the kit needles are probably bad. that's why I only oem carb parts (most of the time some things aftermarket are ok) needles will not affect if your carb is spewing fuel out the overflow its not possible. if you still have the problem of fuel coming out the overflow when parked, it can only be, pressure from the tank, bad float (sinking or not set) bad needle or bad seat. if your overflow tube is cracked or has a pinhole that will also make it leak out the overflow.
