I personally don't add maize Bluey, as that's what I want the birds to take in the basket, as there fat reserves would have already be where it should be by the time basketing comes around, carbs are quickly burnt out so they need them and need to use they are used quickly, my mixes even for sprinting contain little maize, but I know my birds will take them with relish being in the basket for 2 days, and eat them a lot quicker then the competition will who may have carb loaded there birds. I believe in fat loading as the finest source of energy, as it is slow burning. However 4 days before basketing hemp is infront of the birds at all times however this year it will be a combination of hemp and sunflower hearts. My mix contains peanuts however I also supplement this with 10 peanuts per day per pigeon, and hemp oil on the grain.