[Hal H]

Its pretty rare, it may have been a defect in a casting or assembly...

There have been a couple of members here that had bad synchros, but on the whole the main issue has been the cold driving/warmup with the 1st>2nd gear nibble on upshifts (much better from '10 onwards).

There's a few here on the forum that are regulars at the track - no reports of transmission issues so far.

 

[Heminator]

Have not had that problem.

Make sure you are biasing the shifter to the right when entering the 5th gear gate. Most gerarboxes will complain if you inadvertantly split the gates between gears (say 3rd and 5th in your case).

 

[WesleyinSpace]

I have the exact same thing happen. My 5th gear is grinding when shifting from 4th. I can get it to grind at idol, too, so I don't think it has anything to do with the reverse gear.

What became of your problem 392 IE 6spd?