Unleashed Mesh-- Any way to define priority / preference for a mesh uplink?

unknown

I have a network with 7 root nodes and a few mesh nodes. All of the mesh nodes seem to do a great of picking the best root node accept for 1 of them. Is there any way to set a preferred root node on this mesh node? The only way I can do it right now is to reboot the other nodes a few times and leave the preferred node as is.