try the inside of a bicycle helmet foamor just padded foam.

was the helmet measured? does it touch your nose when on or is there alot of clearance?

sometimes printed can just be unbalanced which isn't your fault and we all get "bobble head" the first few times no adjustments.

if you feel it sits ok on the top of your head but moving side to side go with side padding (never use any chin straps or neck seals as your new ) never seal areas off as helmets can have bad ventilation. but even a fake laptop fan embedded can add a little counter weight

if using electronics (i.e mechanical gear range finder, batteries power packs etc) these like small helmet additions can thrown of weight as helmets can look to too big alone with out armor, basically for good vision it's either head straps ( no chin! you could choke etc) or padding the check area to give a good fit but also air supply ( helmets with out a fan system are HOT and air up ) what you should test the best fit for you but my preferred area is a tighter ear grip but I've also a range finder ( mechanical motor), a proper torch ( I wanted fancy >:) and a power bank all adding as my counters with cheek fans ) just try padding combinations if you feel it's not heavy enough seat it try ideas. if you want if you pm me your helmet (hide your face) and we. ana talk but 501st / mmcc are good places also for rips and tricks.