2008 GT500 47k miles, No reverse gear, had some grinding going on and then randomly backed out of my driveway (no issues or grinding then) drove about 5 miles, sat in a parking lot for about 15 minutes. And I haven’t had reverse since. Acts like it’s not even there. No engagement no clunk. Can leave it in reverse and get out of the car. Praying it’s not a synchro however starting to look like it judging by other forums I’ve seen. Any other thoughts or confirmation of the fear?