Hey guys I am having a problem with my 06 mustang GT 5 speed manual and wanna hear what you guys think. When I am trying to race my car going into 3rd it grinds like 80% of the time. It does it sometimes when just driving normal slow shifting. Is it a synchro? It's only in 3rd. If I wanna hit 3rd while racing I have to slow shift into 3rd and that slows me down. What do you think???