So. I've fixed the source of that clunking sound. It wasn't the rack. It was right inner tie rod. Unfortunately, I understood it too late: when dealership replaced lower balls, upper control arm and both tie rod ends. And now I am very angry because I paid almost $1300 for the operation that normally should not cost more than $100. Just out of a curiosity: what those operation would cost me if I perform them in a US dealership?