Hi there,
I've poked at the ruleset trying to remove the need for the Firestorm/Lightning/Avenger to refuel with Elerium. I've tried removing the line with 'refuelItem: STR_ELERIUM_115', which seems to work until the air combat window pops up at which point you get an amusing bug, and I've tried setting the value for refuelItem to 0 as implied by the ruleset summary, which causes the issue that I have no '0' with which to refuel it.
I'm sure that I'm doing something that's obvious to brighter minds in terms of flubbed syntax or similar but I'd be very grateful for pointers. I'm using Notepad++ as an editor if that is relevant.