  Considerable asymmetries in jets from active galactic nuclei (AGN) and
associated double radio sources can be caused by an inhomogeneous interstellar
medium of the host galaxy. These asymmetries can easily be estimated by 1D
propagation models, but hydrodynamical simulations have shown that the actual
asymmetries can be considerably larger. With a set of smaller-scale
hydrodynamical simulations we examine these asymmetries, and find they are
typically a factor of $\sim 3$ larger than in 1D models. We conclude that, at
high redshift, large asymmetries in radio sources are expected in gas-rich
galaxies with a clumpy interstellar medium.
