Pull the turbo off, put it on the bench, and remove the housings. Look for any rubbing/clearance issues on the wheel or housings. If none, spin the wheel to see if it is internal to the chra...you need to determine whether you received a bad turbo or not. If so, call silber and ask their opinion and whether it needs replaced. If it is new or you have maintained it well for a low number of miles, silber has skin in the game from a company standpoint. If there is an issue, be reasonable about your expectations of replacement/partial participation. The company can make it difficult for you if your requests are not fair.