cast iron repair ?

Wow they shipped those fast!

I bided on those as well... and you are correct.

They were advertised as having no cracks.

I’m like the other guys... I’d contact them and asked for a full refund or the difference back in cost to repair!!!
AND get them to drop the price to a repaired set. Consider your time doing the leg work. Gonna get tricky. I vote refund. In my experience, no one will guarantee a fix on cast iron, either.