Which balancer?

IIRC you cant balance a fluidamper as the silicon is a dynamic component. The housing and hub is rigid but the media in there is fluid. All are neutral without added weights. Thats what I heard from a balancer. ITs not that it will affect the overall balance, it will mask the real balance issue..something like that? Like slime in a tire, its 10oz of fluid silicon, but the tire doesnt go out of balance.....? My CAT fluid type balancer is probably the same balancer in chrome, heavy beast.