Here it seems as though trees that show heavy FMV symptoms also are more susceptible to rust. (Although someone posted an interesting thread about mixing up these two conditions... I think it was ascpete but not sure). Anyway, the varieties that seem especially susceptible to rust here include Maltese Falcon, Chikishlyarskii, Celeste, and Lungo del Portogalo. The sample space is rather small though... i.e. it's not clear if I've got trees of those varieties that just happen to be weak/more susceptible to rust, or if it really is something about the varieties. As for treatment, I use Neem Oil.
Mike central NY state, zone 5a