Oh dear, I'm afraid I'm not going to be much help because I, too, hardly ever use my form. Well, to be truthful, I use it pretty much only to hang skirts/dresses before hemming and sometimes to "see" what an embellishment or neckline will look like.
I use pattern drafting software (My Pattern Designer), so fit isn't a big issue to me anymore.
I found that the uniquely you did give me a form that is closer to me than the dritz that I mounted it on, but it's still not quite exact. I did mine myself (using my measurement chart from my pattern drafting software), and I do think that it's a step up from the dritz form, it's just not quite "exact".
It's a little frustrating moving the inserts around, but be patient and put on some music. Also, don't forget that you do have some options for tweaking by adjusting the original dress form - I set mine to close to my measurements first, then did my thing with the uniquely you padding, then reached up inside and did some tweaking with the dials on my dritz to fine tue. It worked well.
One major improvement is the bust & midriff - much closer to what I am.
It took me a while to shift the pieces to get close to my figure, but all in all, it can be done
by yourself if you have a good set of measurements to start with.
I, too, hope that someone who uses theirs will chime in