I have a 2003 350z that scrapes when going to 5th gear unless I am very carefull.It seems if I push too far over it scrapes.Is there an adjustment to limit the shift travel for the 5th gear?Or am I barking up the wrong tree?

 

Synchro might be shot - somewhat common occurrence although my '03 with 114k has never had any tranny problem at all.

 

Check out the sticky thread in the Drivetrain or Maintenance forum. It has everything you need to know about the early trans and grinding problems