l know its a bit late but as a locksmith and rider a few tips. Do not use chainoil, engine oil or grease. This attracts dirt and forms a sticky paste, at first they seem fine but as the petroleum content slowly evaporates they gets thicker, enough to stick the pins or wafers after you remove the key. spraying with the lighter WD40 , GT85 solves this. Graphite does work but do not mix it with oil not only does it congel a bit but you get a black stain on your fingers or gloves. If a quick spray with WD40 ect ( l do mean quick as in 1/2 a second) does not make the key come out smoothly, take it to locksmith who can gently ( no you cannot do it with a rasp) take the burrs off the reverse slopes of the cuts with a fine warding file without affecting the depth of the cuts.. even though immobilisers are not cheap, do not wait until you only have one key, l have seen grown men cry on losing their last keys. One last thing , take ALL your keys with you on biking holidays, they do you no good " safe" at home!!!.l carry two sets in my jacket and one hidden under tape on the bike ( under the tank or on TOP of the airbox) handy if your jacket gets nicked. Bye.