As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PURCHASED AS A DIRECT REPLACEMENT FOR PIPER P/N 462-722. FUEL CELL S/N A343 WAS INSTALLED AND LEAKED IMMEDIATELY AFTER INSTALLATION. THREE ADDITIONAL FUEL CELLS WERE SHIPPED TO INSTALLER, TWO OF THREE WERE INSTALLED, BUT WOULD NOT FIT FOR VARIOUS REASONS. THE THIRD WAS NOT INSTALLED DUE TO THE PREVIOUS INSTALLATION PROBLEMS.