In looking at the pictures in post 1 of this thread I seem to think some damage is visible below the waterline. Perhaps it is an optical illusion?
You may wind up replumbing the vessel depending on the amount of fuel that made it through. My two cents, your mileage may vary. It would seem...
Speaking as a land based plumber my advice is to replace all plastic and rubber parts in the system. Fill tubes, washers, impellers, diaphrams,...
Eating pop corn and repeatedly hitting F5 key...
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