Unsafe 20 gauge VHE barrels

[Thomas Baumgardner]

First time using forum, hope I am doing this correctly. Aquired VHE 20 gauge via the Internet and told by owner of store that bores are nice and clean. I sent the gun to Larry DelGrego for some cosmetic work but noticed some pitting in barrel and asked him to check the barrel. Larry reported that the pitting was extremely deep and that after measuring wall thickness believes the barrels unsafe to shoot. Having discussion with seller but not optimistic he will take gun back and refund my money. Do not questions sellers integrity, only qualified gun smith could evaluate the barrel properly. Any thoughts on making this gun a shooter other than buying a set of new barrels which would cost more than the value of the gun. What about 28 gauge sub tube? Have not gotten the gun back from Larry yet, but looking at my options if seller refuses to take gun back. Thanks for any input.