I placed a few orders to trade butterflies (2 contracts closest at the money, 2 contracts one or two strikes away on the May monthly contract) today for ORLY, AFL, and AYI. All orders were limit orders for a credit at the midprice. None were filled, but they were only active during the last hour of trading. I usually only do single or vertical spreads and I can usually eventually get filled at midprice, even on less liquid / less active stocks. I haven’t done many multi-leg spreads. How…