I have replaced all the rubber lines I could get to. My next step is to drop the tank. I drove it about 8 minutes today and it ran fine but there is still a considerable difference in the amount of fuel flow I see in the filter from when I first crank it and after I drive it. I pulled the fuel line off the carb again oday and I get lots of air bubbles in the fuel. I am still too afraid to go long enough to see if it quits. I hate that. I guess I will have to just do it tomorrow.