I have two subtools, one possibly much bigger than the other, but need to equalize them and center in the same space. I have NO idea how to do it, because one or the other completely disappear when I select the subtool. I am at my wits end as to how to manipulate them. They disappear!
Press Tool>Deformation>Unify for both subtools. This will center each mesh and reduce it to a standard size. You will then be able to move and scale one subtool so that it is correct in relation to the other.