It's hard for me to believe, that all the owners of all one hundred and fifty-one flying RV-12's and perhaps another hundred, perhaps two hundred or more RV-12's still being built ... all with their non-leaking gas tanks installed and not yet flying will all remove their gas tanks, tear them apart, drill another twelve holes in a fuel tank with hundreds of predrilled holes manufactured in them already, clean the old sealant, add clips, nutplates, drill out and re-rivet and etc, etc. etc. ... ain't gonna happen.
Seems to me, the only way that it would happen would be in the form of an AD (Airworthy Directive). I know I'm not the sharpest tool in the shed and I will if I must but ...