Well mine was no reverse, basically locked out, parts 2.50, I showed them the printout, they found the part. (nissan) took a week or so to show up. So if your reverse gear feels like it's locked out, that probablys the problem. Didn't do it myself. But been told it's not a gbox out job, isn't easy to reach though.
No probs with reverse since. Don't know if it's the same part on a rwd 32 gbox though.