I live in a dry and very dusty area, Lubbock, TX, and decided to change the air filter at 7Kmi. The owner's manual made it look simple enough, but I found that the side panels would not separate adequately to remove the center panel. Am I nuts, or did I just remove and replace 29 screws just to replace the air filter? The OEM filter was still useable for a few more Kmi, but it has been so dry and the blowing dirt so fine that I wanted to replace it with a K&N so, worth it. Thoughts or opinions anyone?