anyone use these filters? I got my hands on a few, gratis, and I thought I'd give them a try while the Uni is being cleaned. Might be handy to keep one in my pack since they come pre oiled (with Maxima) and in a little sealed bag. I figure they should be fine as long as i continue to grease along its edges and the airbox. I'm just curious if there are any negatives to these filters running in the desert dust.