It seems that 75% of the time when i go to fill up the gas tank in my car it acts "full"...the pump will go for a mere .50 or w/e and click its "full"...of ocurse its not full...its the pump's auto shutoff...but it happens almost everytime i go to tank up! i thought maybe there was an air pocket at first...but now its continued too long....hopefully this isnt a "crazy" problem and it has an easy answer

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thanks for any info...
jonathon