No start: Have spark, have fuel, have air

[PimpS]

OK Alan! I called my mechanic, he assured me that it has to be something with the contacts in one of the switches (whether red, clutch, sidestand...). Other friend didn't know that i have to pull the clutch before starting, so he was more specific and told to look the clutch. In the few minutes time i have between the classes i went down and checked. Yup, the small switch (like a straw comes out, when clutch is pulled and mine came out 2 mm short). When i started the bike, he didn't, when i gave a straw a little touch, to come out, bike started with no problem... Now i know...
Is it ok to try to spray it with a WD-40?

Thank you Alan for speedy reply and help, next time i might need to clean the red switch, i'm starting to know my bike and his health quickly...
Can't wait to finish today's job, yihaaa!

PimpS

ps: to you guys and many my friends i'm like a kid, enthusiastic and overworried when something goes wrong, but overecstatic when the bike is being parked, just wanting to sit on it and go!!!! but then again, i am what i am, most mf's don't give a damn, said anthony kiedis (RHCP)...