Other jobs (refinement etc) automatically resample masks and volumes, which is a very convenient feature, so that one can use e.g. a coarsely sampled ab initio volume as input for refinement without manually resampling it.
3D-VA requires that the input mask have the same dimensions as the particles, and will fail with an error if this is not the case. As 3D-VA often requires downsampling particle stacks to get around memory limitations, this usually means the mask needs to be resampled in volume tools to match the downsampled particles.
Would it be possible to add automatic resampling to 3D-VA, for consistency with other job types?