Other Fuel System Tank Filling/charging problems of the 2001 Toyota Sienna

I have a 2001 Toyota Sienna. . Having problems with evap control system. I cannot fill up the gas tank continously. . Stops every few seconds. . . Sometimes spilling gasoline. . (started at about 46,000 miles). . I paid $98 dollars to a local Toyotal service center to have it check. They said, my van has a problem with the "charcoal cannister" and would cost me $500. 00 dollars to replace. . . I called Toyota customer service to find out if they will cover the cost of the replacement since they have a settlement issue with epa regarding these kind of problems. I understand they have a $20 million dollar settlement w/ epa for these kinds of violations. . But they cover vehicles manufactured up to 1998 only. They have extended the warranties for these vehicles to 14 years or 150,000 miles. . . If they are covering vehicles much older than mine, I think that the warranty for my vehicle should also be extended because it has a problem relating to the emissions. Also, $500 dollars is too much for a charcoal cannister replacement. . I would appreciate it very much if you can get this issue resolve with Toyota. They can always get the $500 from the $20 million settlement they had agreed w/ epa. Thank you very much, esteban.