2013 mack cxu 613 455 hp turbo question

Can anyone help me out. I chipped two valves in # 6 cylinder. It's a mack 2013 mp8 motor. The turbo only has 6000 miles on it . Where getting the motor over hauled. They said I will need a new turbo the fins on both sides are not damaged they are worried about fragments of metal that may have passed through the turbo.is it possible to send out to get checked and cleaned out or just another 4,000.00 all over again

 

They said today that they found pieces of metal in the turbo. They said the in frame over haul requires new turbo or warranty work could void thanks forgetting back to me I guess it another turbo.

 

Thank you for your reply

 

2

 

valves in #6 cylinder chip and broke off the edge of valved

 

#6 cylinder chipped off two pieces of the valve