Click noise 4th gear and neutral (1 Viewer)

[DirtyAZ]

Hi all, hopefully I'm posting right. This is my first post, but I've had some good help on here before joining. Much appreciation to the guy who posted how to replace the cats. So, here's the thing...I have noticed a click feeling shifting into 4th for as long as I can remember. I never noticed a click noise until I drove with the radio off. I can't say if the noise is new or not...I know, lame. I'm the original owner of a 2007 Fjc since 2006. It's got 151K miles. I run Redline MT90 in the tranny and replaced it to see if that helped...nope. I've seen threads on 2nd and 3rd gears, but mine is 4th or if I'm in neutral and move the shifter side to side. Manual tranny. Anyone have this noise, and is it just normal? Thanks in advance.