I think part of the interest in smaller gassers is from people that don't currently fly a gas anything. They have an image of installing the gasser where their glo engine was and away they go. Little or no thought is given to how and where they will install the ignition module and related components in a small fuselage that is already cramped for space with just the glo tank in there. They don't think about tank relocation, additional cooling requirements, greater weight, etc. They only think about getting rid of the glo mess and going flying off into the wild blue! Should make for a good spectator sport during their learning curve!