k&n filter vibe issue

[darrsi]

I mean the filter inside the box, not the box itself, sorry.  I wonder if the filter isn't a snug fit and is vibrating slightly.  I remember tightening the airbox up when I bought the bike which helped the vibes a little.

I meant the filter too, don't actually know if it touches the bottom of the air box, but a K&N is very snug and well fitting around the top so won't vibrate there.
Cheaper air filters can be ill fitting and loose in comparison.