How easy is it to place combo orders for spread positions on futures options and thus avoid the risk of legging into the position. For example is there any trading patform that would allow me to automatically place an order for a buttefly, condor or double diagonal position as a combo order? For options traded in the pit, are there reliable brokers that can execute these positions: buttefly, condor, double diagonal as a combo position? Any broker recommendations? Any execution tips, warnings? Any things to bear in mind about trading these positions. Thanks!