OK...wow. Thanks guys!
I do not have a second fuel filter...that was a winter to do.
Thanks for your hypothesis. Most of you came to the same conclusion, which really helps me! I will try to free without removing first.
I was in the habit of shutting off my fuel valve and running dry when I was done with my engine, when another A-4 owner told me that wasn't necessary. I will go back to that habit.
Matt
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