I'm setting up a J-3 that has an OS 46 AX mounted inverted. As we all know sometimes this presents problems. Different rectangular DuBro 10 oz tank with new tubes and medium fuel line. I'm going with a 3 line system. Finally got the engine running well on the test stand (vertical of course.) Has anyone mounted a glow vertically in their Cubs? Yes, it's not scale but they really do run better. TIA Bill