As Paul said, call Ruger, they should replace them. I had some odd ball Rings on one, they replaced them with no question.

I've also ordered 5 or 6 new sets of rings from Optics planet ( with no issues) in 30 mm, for a cost that was lower than Ruger's Dealer Price.

"Minus the killings, Washington has one of the lowest crime rates in the Country" Marion Barry, Mayor of Wash DC

“Owning guns is not a right. If it were a right, it would be in the Constitution.” ~Alexandria Ocasio Cortez