Anyone change out their cabin filters with a non-oem filter? I'm trying to find an alternative filter because the OEM filter ain't cheap and Subaru wants their customers to replace it every 7,500 mi / 12 months. The cabin filter in the 08-09 is NOT like previous years even though all aftermarket compaines indicate they are on their websites. I ordered WIX p/n 24485 and it doesn't fit. Looking at the OEM filter on the 08-09, it comes with the filter media integrated into the plastic frame so this would explain why it is more expensive than typical drop in cabin filters. I thought about trying the "home depot" trick of cutting a similar sized piece of 3M filter but unfortunately the frame would not provide an air tight seal using this method. If anyone has any ideas post'em up!