The International CBX Owners Association

As you found out, brass isn't cheap! But what you did is the way to do it. You'll find orienting the inlet from the tank to the rear works best. I would be a bit concerned that you had some leaks that lasted 'a few minutes'. Where were these leaks? From your brass fittings? Or from the bowl drains? Or somewhere else? Did you polish the brass seats for the float valves? What float valves did you use? I like to see no leaks for several hours on the bench before the carbs go on the bike.

Dave

Relative to what Dave mentioned about leaks. I highly recommend determining the source before installing the carbs. If these carbs have never been rebuilt, I would suggest the effort be made (personal or $$$) to have it done now while they are off. If the leak is anywhere between carbs, the orings need to be replaced. SOONER OR LATER. So will any other leak source. As the Fram man said years ago, "you can pay me now or pay me later." Be certain that Viton orings are used in any rebuild.