Hi my bikes just hit 12,000k, was wondering what needs doing service wise? I changed the plugs, filter and oil 2 months ago and the bike is running fine (albeit, it can be a bitch to start if left for a few days). Just wondering does the 12,000k service need anything technical done (I'm not very mechanically skilled). Or is it just the usual oil/filter job?

Also are K&N filters worth it?