Doesn't work that way. The 1's are solely for the pleasure of the MMs, not the retailer. By the time any retailers are getting filled in size at 1 then that means the MMs are offloading any surplus inventory before they abandon the bid. This is why people saying they are not getting filled at 1 are more lucky than they can imagine because getting fills at one is a prelude to the No Bid zone and you don't want that. You don't get the ones, the MMs do. You buy at 2 and sell at 1 or 2. Thats just basic operating procedures and people have been very misinformed about this.