Onan 3600lp turns propane regulator to red

Thank you for the replies. Let me see if I understand. The propane supply tank has a regulator that limits flow to the demand source to 11" give or take. The propane supply feeds a demand regulator that is installed on the generator. The propane demand regulator opens and lets propane flow to the carburetor depending on vacuum created by the cylinder. If the demand regulator is letting too much fuel flow to the cylinder it is creating a flooding problem. This is what I have thought since August, that the demand regulator on the generator is the problem. I would like to do one more test, I need to know the specified flow rate to the carburetor and "T" in the manometer to the line from the demand regulator to the carburetor and see what kind of flow I'm getting there. I haven't done that yet and that might pin down the demand regulator as the problem. If I can't figure that out then its going to the shop. If anyone has any other thoughts please let me know. I will get back with what I find. Thanks for the help.