Nissan Genuine 20611-JA000 Exhaust Mounting Assembly

I purchased this due to a vibration at about 1900-2000 RPMS. Posted pics of old and new part. 2014 Nissan Altima with 57000 miles. The vibration started at least 15000 miles ago and has slowly progressed. It’s extremely annoying. 1st dealer says your car need tires. Ok ,well, it dosent just vibrat at 1900, it’s also in park, just most noticed at 1900. But i knew the car needed tires before the genius told me. I got them and of course it didn’t take away the vibration. More recently, I decided to take it to a great most trusted, and i mean that, transmission mechanic. No tranny codes. Looks over all mounts, test drives it,… the works. He can’t seem to pin point this annoying vibration,but suspects it’s coming from the transmission. So I go to another dealer, as its still under power tran warrenty. They also find no codes from tranny. He ends up shimming this exhaust mount. Takes it for a test and he says thats your problem” because right about 2000 RPMS she wants to shift and causes that exhaust vibration to transfer through the vehical”. So after the shimming, I noticed the vibration changed and is a tad better, however not fixed, not even close. As I said earlier, it’s noticed at the start of the vehical not just 2000 rpms. Just to be sure it’s not this worn mount, I order this part. I Easily install it myself. ..Im happy with the part because ,again made the vibration a little better but it still did not fix the problem. To sum it up, I believe this worn mount is a symptom of a grater problem. However, it’s worth the 20 bucks to replace for some relief of the annoying vibration. Hope this helps someone…because Nissans got a problem