Ask HN: What to do in an equity disagreement in a startup

(This is an anonymous account.) I work with two other co-founders on a startup. We're angel funded, though our angel took an obscene amount of equity for the little money he put in (in the 10,000-50,000 range) due to something that happened before I started to work at the startup. I joined after the first two founders, Austin and Michael, started to work on it. Michael recently quit another startup to work on this one. (these are pseudonyms.) I joined as the developer/a bit of business. I was the sole developer and designer of the site, of course with Austin's and Michael's non-writing-code assistance. Both guys aren't MBA-touting douchebags looking for "a hacker to make their startup a success!" - they're very knowledgeable in technology and the web, as well as business/entrepreneurship. I originally was to receive 20% of the company. However, Austin wasn't happy with receiving only 20%, and thus wanted 24%. That meant that my equity holding was going to be reduced to 16%. (We are inc