Santa Fe Vibration at idle stops when put into neutral
 

My sanfa fe 2007 vibrates at a stop when transmission is in drive doesnt seem to vibrate when actually driving. If at a stop I put it in neutral no vibration. engine not ramping up at all rpm stable.Not AC related not tire related.

I did find a bad motor mount in front replaced and didnt resolve issue.

I tend to think transmission problem maybe where it connects to engine but I dont know.

Vibrates at headrest drives me nuts.It always seemed to vibrate even when new but now seems worse.