Good point we have drifted off topic..

Dave like me uses pleated paper filters as a clunk. They seem the best solution if you want to avoid UAT and save some weight. They have a larger surface area than any of the alternatives and do not seem to clog up as readily. We did use felt clunks in a one tank system, but the pleated paper filter is a much better solution. Dave has only had 2 or 3 flameouts in the 120 flights and then when running low on fuel.

John