Went out of town to visit some relatives yesterday and wasnt driving to crazy. I did some hard pulls to go around a few cars but only using 3rd and 4th. On the way home from there house I went in to 5th and it made a grinding noise and had to force it in.I never really had any issues with 5th gear besides the usual once in a while WOT runs and 5th lockout.I never bang 5th gear hard only 2nd,3 and 4. Yesterday I never banged fifth gear and it was working fine. Why would it start grinding all of a sudden? From my understanding its the syncro but this wasnt a gradual worsening problem?