Z1 s pro coilover noise

Lazy Vic

Bought and install z1 s- pro coilover there making tons of noise in back real on both side Im not sure what it is

First install after a day the noise started

2nd time I sent my z to suspension tech had him review the install and he found that my right rear top stud was stripe and wasn’t tighten all the way up so tech had that fix and after the noise still continued.tech made sure everything was tighten even the top hatch nut and still had the noise . He determine that the right rear shock was defective

Once I left tech 2nd time only right rear noise continous and now I’m waiting for 2nd shock to get here but in the waiting process the noise started again on my left rear now



Thank you I’m new to posting it doesn’t let me post video