Duster Roars but wont start...help !

Just a crazy thought...could it be a fuel delivery issue? Screen/filter blocked? Once pressure is off enough fuel gets by to the accelerator pump for initial fire, then when it fires up the supply isn't there....happened to me on a friends car a long time ago...like I said, probably a crazy thought, but you said it was running for a month and then the problem arose....I would think you wiring it all funky would show immediately. Good luck!