did ur filter come on ur intake? it shouldnt be that stuck on...if it came with it attached it probably wont come off...and i dont recomend cleaning it with just a brush, because u have to spray cleaner and spray water from the clean side out...if you just brush it a little it wont get the particals out of the filter, and when u reoil it. it wil trap the dirt there..and prolly just fawk up ur filter.