where should the weight be when you start the lift?
especially when doing barbell cycling, a lot of lifters will start the lift with the weight on their heels because it's a passive position - they can rest here and not have to bear the weight of the load they are carrying.
unfortunately, it isn't a strong position to move from, and therefore is not a strong position to lift from.
so where do you want the weight? you want the weight midfoot/ball of your foot. the same place it would be if you were to jump. feel solid there, look straight ahead, tighten your core, and from here... lift