I have started to get use to micro movements of the torsion wrench so that I can apply the exact pressure needed to easily force the pin up while keeping the others in place but most of the time when trying to move the wrench to let another pin to up I will lose the others but I'm getting slowly better.
I know what you're saying. I've never used a cutaway, just a lock clamped to a table or door jamb, doors in the house, ect...What I learned to do is just apply constant pressure to the torsion bar, so the lock body is pressed against the pins. As you're pushing up on the pins you'll feel it stick a little bit as it gets caught by the lock. Then you apply a little bit more upward pressure and you'll feel it pop into place, and after you've been zoned in on the micromovements of the torsion bar....the jump when it seats and the lock moves to trap it will feel like you've won the lottery. It's hard to do at first because the other pins are in place, taking up some of that tension. But it gets much easier as you go, the sensations you get through the torsion bar start getting more and more dramatic. The last pin will usually be the easiest (except for finding it that is.)
The downside is, it wears your hand out quickly and a small lapse in tension on the torsion bar will undo all work.
And, you know, every lock is different. Exterior locks are much coarser and can bend or break picks, because they don't take to subtlety too well. I think you use graphite dust in a can? sprayed into the lock to lubricate the mechanisms. I've also found the weight of deadbolts can add additional stress to the whole process, because that weight is ultimately focused on your torsion bar.