RE: Gas Engine Filters, Where, Which is best?
for some applications, that is the one and only reason to use a felt clunk filter. Once you start using them, there is no reason left to omit them from a new plane on the bench.
I started using felt clunks when having trouble with my glow Spitfire's vibrations and fuel feed to the OS 4-stroke. The felt clunk cured all problems and then some. Never looked back, and even used them on .15 glow engines in aircombat flight.