for that last bit, i've found that it's very helpful to focus really hard on elevating my elbows during set-up, before i pick the bar up and walk it out, and then maintain that elevation throughout. takes load off the elbows and helps keep form solid, too.
n=1 but maybe worth trying.
Thanks.
I've thought about this. It would seem logical, I'll have to try it more consciously tomorrow or whenever I next squat. The thing is that there is some disagreement between Rippetoe and the powerlifting community about elbow placement which is what's been preventing me from trying it out. But elbow health probably is more important than picayune point.