Two freelancers have partnered up who both specialize in different aspects of Web development. They bill the client for all of the work done and then split the profits evenly, so both parties spend an equal share of time working on a particular contract and have equal say in decision making.
While looking for new projects, Freelancer A spotted a potential project online. Freelancer B reached out to the client to learn more about what the project entails and walked away with a bad feeling. The client didn't really seem to know what he was doing and even kept quoting different prices.
After starting work on the project, the client kept adding more and more to the scope, expecting the extra work be done for free. Months later, the two freelancers completed what was outlined in the contract but are still dealing with harassing emails from the client to do even more work for free.
When working with another freelancer, how can we resolve disagreements on what projects to take so that we avoid situations where one person's judgement about a client turned out to be better than another's?