Thoughts on vibration

So did you ever find the vibrations???
I can't say that I did,I've replaced the trans mount but still there,I just kinda gave up and ran with it,it has not gotten any worse. However I have replaced the whole center section this winter with new unit including case. Looked over the one removed did not see anything that stood out.My simple spidy sense said noticed it after the 4.10 went in thats where it should be but just did not want to change it out but now it is, if we get back to racing with the shutdowns and such.
Also I did send the shaft back out for balance check and he did say it was a little more than he like and made adjustment but no change.Its kinda minor there are times I don't notice it until i focus to listen/feel. I recenlty got a go pro and had some in car footage and can't even see or hear it.So i'm kinda hoping that its all smooth with this rear and see that my original thinking may be correct but????