I only train olympic lifts on occasion (I'm primarily a powerlifer), but I alternate between cycles of back and front squats while following 5/3/1 for powerlifting.
I use a clean grip when training front squats, racking the bar on my delts/in the groove of my clavicle and keeping my elbows up. When first training this movement heavy, I noticed my entire collarbone would be sore the next day. However, as I've adapted to the rack position, I now notice that only my right delt/collarbone side is bruising.
Does this indicate an imbalanced positioning of the bar?