In preparation for our ride at China Hat in Oregon this weekend I made a filter to sit in the open snorkle hole. Last year my filter was totally plugged by the end of the day, but we still had one more day of riding (high desert). In hopes of extending the filter service interval I cut a piece of coarse skid plate foam to the size of the snorkle opening and oiled it lightly. Next, I drilled small holes in the top of my airbox and ran three wires for the foam to sit on. Has anyone tried this? Am I wasting my time? I realize I may be losing a touch of power, but think it would be worth a cleaner filter.