I understand what you are talking about, you are referring to the chips that are on the other side of the hashing boards, the small ones with small heatsink. However, what I am doing is putting upwards the chips with the long heatsink which are the ones that creates most of the heat and thus are prone to fall off the board due to this high temperature. The ones on the opposite side have a small heatsink which tells me they develop less heat. I am testing this position on several miners and see what happens.