weird noise after installing wavetrac LSD

Zilver

I am not a mechanic so correct me if I am wrong in things I say and I don't know how to quote to reply so I will just do a @ name.

@fryzia23
Isn't backlash caused when LSD unit isn't placed properly inside the carrier case? So this could be one of the reasons the ring gear and pinion are not in proper contact with each other?

@Spooler
i have purchased a new stub axle as per Wavetrac's website to replace my old OEM VLSD.
Wavetrac® Differentials - Application List

It said "370Z with OEM viscous LSD must replace RH axle flange with Nissan #38220-JK01B (1 req) to install Wavetrac"
Just a side note I believe a open diff Z has stub axle JK01A on both sides and the VLSD version has JK01A on the right side and JK01B on left side. Wavetrac requires both sides to be JK01B that's why only the right stub axle is needed to replaced from JK01A to a JK01B for my VLSD.
My car is RHD but the mechanic has taken out and returned me a long stub axle which is JK01A .

I bought it from
https://cdn.z1motorsports.com/imageG...etailsHalf.jpg

I didn't notice until you told me that the left stub axle was doing the ''funky chicken'' however we followed Wavetrac and never swapped the LH stub axle. That movement is really weird indeed not perfectly rotating, is it normal?