4th to Reverse??
If you drive fine in 5th gear and still get grinding, its probably your 4-5 syncro.
I lost a syncro between 1st and 2nd gears in my first 30,000 or normal street driving and got wicked grinding whenever I moved between the two gears.
If you drive with a bad syncro, you run the risk of chewing up your gears also. I drove with mine for another 10-20K and also had to have a gear replaced.


