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There will be a version of Fistful of Lead coming out at some point. I’ve played a test version and it works great. There will be customisation along with build opportunities
I think you mean star eagles? it has been out for a bit. https://www.drivethrurpg.com/product/245903/Star-EaglesNot a bad game I gather, I havn't gotten round to playing it myself truth be told.
Interesting thread, I have rather a few Crimson Skies 'planes which may benefit from the above suggestions, the rules themselves (Crimson Skies) are rather clunky.