today, cleaned n lubed kn. longer bolts required to fit, monday job. no one told me that. biggest prob is i lost a washer off air filter. where it is, no idea. hoping not in airbox. will give inside of air box a good blast with air gun in morning. simplest job, nightmare. 51mm intake kn, other was 39. must flow better. really annoyed losing that washer. slap me please.