g27 shifter problem with 4th and 5th gear

[Walter Conn]

Hi all,
I discovered that my G27 shifter is not going into 4th or 5th gear intermittingly. Also, the problem has occurred while in 4th gear and then it puts me in neutral involuntarily.
I lost a 67 Honda F1 engine in my last race. I fear that there will be more of that in my future until I can get this fixed.

Any suggestions?  
Thank you,
Walter

1st update: Hah, I did a second test drive after I asked for advice, and luckily I did not have any problem that go around. Maybe it just needs to be used more often?