hey I got a 2015 xmr 800 and after every couple rides il pull the air filter and there will be lots of dirt/ grass on it..looked in air box didt see no holes, the clean side is staying clean but not the dirty side. could this just be coming in from the snorkel? anyone else have this problem? was gonna silicone the airbox lid but be a pain in the a$$ to have to remove old silicone everytime to clean filter specially if its after every other ride..