Dude. .. Thank you for your service! You be careful in what you do! Welcome to the site, it's a good place to be. My 2cents, fuel problems:filters, lines, jets, diaphrams, squirters, gaskets.
Distributer problem:cap cracks, brass terminal issues, not advancing properly or enough, points or module troubles. There's a thousand different areas to check. Talk to an old helo mechanic, I've worked with several, most intelligent folks I have known PERIOD. Good luck sir.BOOYAA. Cool barg. Nice buy!