Howdy! Would like to do these mods to my european NX650 that carries the 650L engine, but didn´t find the instructions above very easy to follow. Do I have to drill holes in the carb in order to raise the needle? What new jets and in which sizes are needed? How does one get rid of and block off the "smogthing"? What should be done to the airbox? Thankfull for any hep!