Noisy balance shaft v6 [need answers]

[BREWZA]

G`day all only a newby here i am not sure if this has been talked about before but my vr v6 i have been told has a noisy balance shaft which i have been told is a very common problem the engine has 256,000 km on it so i wouldn`t mind a few questions answered thanks Brewza .

Any tricks on shutting it up?
Can it become a serious problem ?
Whats involved in replacing it ?
Do i just ignore it & turn up my radio ?

[Pub247]

sure its the balance shaft? could be timing chain balance shaft will sound louder underneath near gearbox