Finally Solved; Short Summary, I took it back to the dealer after they removed and replaced a new differential. That did not solve the Noise issue. Before that, I had SandCraft try the thing with the differential plus purchased their custom carrier bearing and had the prop shaft phased ($600 bucks) and still had the front end that sounded like a giant rock tumbler. Before the differential swap, Polaris had the dealer replace the gears in the differential to no avail. All the while Polaris is telling me a noise is not a defect so there is nothing we can do! Finally, through persistence Polaris tells me to take it back to the dealer that they have one last thing they can try, I did. This is what fixed it this is what Polaris should have done in the first place. They put a new prop shaft in it; the prop shaft is the ones that they are using in the 2018 models. It is a CV jointed shaft instead of the U joints. The whole shaft, not just the front half. NOW THE NOISE IS GONE!! I could go into why the prop shaft makes the differential noise (or not noisy) but no time to get into it but just think of it in the sense that the shaft is making the diff gears chatter because it’s not rotating smoothly. Polaris it sure seems like you make the road to customer service a hard road to travel. It took 3 months to get this done. Job One Should Be Customer Service (Satisfaction).