I noticed when I got to the field and picked up my plane that it sounded like the clunk was free inside the tank. I then pulled the tank and found the hose had somehow stuck to the top of the tank so the clunk was not on the bottom of the tank..

I will run it again Friday.. sure hope this is the problem

I am kind of wondering why the clunks in planes don't use a wool felt style pickup filter like chainsaws do????