Lets not over protect the manufacturer. A good fuel tank should not leak. Period. This is the quickest way to ruin a good airplane. Sure the compartment should be coated just in case, but it doesnt help much as fuel will soak through even small uncoated areas. I havent bought a SIG in a long time but from their remark it seems they should look into better quality tanks for their airplanes. There are good and bad Chinese fuel tanks available.