"Instead of the scaling the leg manually, use the morphs to scale it."

Well, I thought about that, too, but I think that's not really an option.

The DAZ body morphs only scale arms and legs as a whole, but some shapes require only the shins to be scaled, some only the thighs. So I need full direct control over the scaling.

The single axis scaling obviously does work in Poser for Genesis when used with the bodymorphs, so there is no (technical) reason it shouldn't work by itself, too.

I already unhid and dialed the joint centers manually, but "fixing" the thigh messed up the shin and fixing the shin messed up the foot.

Anyway, here's a render of V5 in Studio, and the shoulders are a lot better than the exported version.

But, wow, is Studio 4 really that much slower than Poser 2012 ?

I used the default software render setting and the exact same lights I used in Poser, and the render took several times as long as a comparable Poser render.