Man, I've been having the same problems as Todd with my 5050 all winter. I also changed my filters, replaced my fuel pump, added anti-gel, replaced fuel line. I'm pretty much convinced the problem is in the tank, so I am very interested in learning more about the water traps. What are they, where are they and can I get to them without taking the whole tank off? I tried to get the fuel shut-off valve off but it won't come off without moving the tank back an inch. Any suggestions?