RE: Question about fuel system
Not to digress too far from the topic at hand, but I'm really surprised to hear your needle clogs that often even with a fuel filter. I (typically) only filter the fuel once, when it it pumped out of the bottle into the tank, and I've only had a clogged needle twice in the past three years. Oh well, I guess that's where the old phrase "YMMV" comes into play.
On a side note, I really hate those remote needle setups. I've only had them on two recent OS engines, a .10LA and a .40LA, and they are a pain. They take forever to settle out when you change the setting, and seem prone to inconsistent fuel draw. Can't for the life of me figure out why more engines don't use a direct mounted needle set at an angle to keep fingers away from the prop, ala the larger Norvels and several c/l engines......just my 2ยข.