Here is another idea about filters. After a forced landing because of a plugged filter, I put a second filter in parallel to the first one with a small valve that I could shut the flow off to the second filter. Both filters are used for takeoffs, and then I close the backup filter valve off. If I ever have the first filter start to plug in flight, I can quickly open the valve and the second filter should still be clean and ready to get me home. Take care, Jim Chuk
Avid MK IV (flying)
Kitfox 4 (building0
Northern Mn