Obviously we disagree...and you've already helped to make my point. There is no sintered block in any of the carbs in my glow motors. Also glow fuel all in all is pretty clean, so a filter is nice but not a necessity on a glow motor. More likely to get dirt and insects in through the throat. Gas coming from the bottom of a tank in the ground is a different story. The carb on my glow motor can be taken apart at the field in less than 3 minutes and usually one screwdriver. Theres really only two parts not including the screws. A gas motor is much more complex. On a glow motor, you put the plug in and forget about it. You don't even need to worry about whether there's actually ignition happening at predetermined times.

There are a lot of folks I see at the field that have trouble getting their glow motors running correctly and are flying with it obviously not tuned correctly....they typically boast 2 or more years RC flying experience. A glow motor is in a whole different league. Here in the US, it is extremelly helpful to have a vendor you can fall back on if you run into a strange problem and its your first gas motor. Now if you have a lot of experience with motors, and motor overhaul like you XJet, then yes, its not a whole lot more complex. I think a lot of folks are looking at their backgrounds and not considering the background of some others that enter the hobby and can't really even build the plane from sticks.

Don't know about his plane, however, I know the person with problems on his DL had a filter on his gas jug....as I saw it.