i have a homelite classic weedwacker that wont start due to flooding. it is a walbo carb i cleaned the carb with carb cleaner,used air and blew out all the ports.put in a new diaphram and gasket.a new needle valve and still floods.i drained all the gas out and then just put some gas in the choke port and the trimmer would start and run until the gas ran out.what would be the problem?

dale, June 2011