I bought a used 15g greddy kit off ebay, the guy said that turbo needed a rebuild because it has shaft play. I asked him if any of the wheels were damaged and he told me that all the parts could be reused according to some turbo shop. so i get the turbo in the first thing i do is crack the case open and i find that the exhaust side wheel has damage on the bottom part of the wheel. it has worn down fins its barely noticable but its there. i tried to take a picture of it but my camera cant focus on it. so i let the guy know that he has bull shittted me and he says that all it needs is to get rebalanced after the rebuild even with messed up wheels. is this true or do i have to buy new wheels?? i have rebuilt a mitsubishi turbo sucessfully but it had good wheels not sure about this one..