By "2 defendants have defaulted on the service of complaint," do you mean that they were properly served with the summons & complaint, and failed to file an answer within 30 days of that service? If so, then, continue with your request for entry of default against both defendants--HOWEVER, do not dismiss the entire action. By filing a request for dismissal of the entire action, before having judgment entered, you are telling the court that there are not issues left for the court. (Know what I mean?) Also, once your request for default is entered, then you would file a request for entry of default judgment by court. I hope this helps.