TYGA performance and the evil auction house that can't be named are two good plaes to start looking.

If you are dodgy, the reeds gasket can be substituted with a thin film of gasket goo.

If an emulsion tube just fell out, I would check to make sure that the thread is still usable in both, and check the rest of the carbs to see what else is missing. Did you happen to note what model carbs you have?