Hey Hops,

I know how important your Squat form is to you. Our form is important to all of us. I constantly have to remind myself to stay back and ballanced before each set (I tend to lean left a little). A not so perfect day is not the end of the world and I don't think you need to switch exercises. PR day was great, wasn't it? Well over 100KG now mate!

If you really want to incorporate box squats, I'd suggest doing them on light day with light weight. Light day is meant to re-inforce technique while allowing recovery, and I see nothing wrong with a few box squats instead. I wouldn't suggest taking the regular squat out.

How's the shoulder? Muscular soreness or something else? Strain?

Cheers,
Jeff