so I bought my 2003 Honda pilot and I noticed when I turn my ac on the front vents especially the two middle ones don't blow out any air flow even on max. so I go to check the ac filter and see that there is no filter in there at all but there are a bunch of dirt and leaves. So I take my car to vacuum it all out and still no air flow. I can hear the fans working and the rear vents blow alright. There is a loud noise as well. I was told it might be clogged by dirt ect. but how am I supposed to unclog it?