It can happen
Speak to the supplier otherwise you're snookered.
Set of fedimas that are on eBay right now, pal bought them new, they weren't round, 4x4tyresonline I think it was, they took them back used, ebayed them, sold them and u assume the guy that bought them has them back on eBay again
Remoulds are not always perfect but that's why new casing off road tyres are ££££