I think a lot of changes need to be considered not just the same same every year...look at racepoints that give bad returns every year and dont go there,have more contact with other feds to avoid clashing and think before you lib with bird behind infront and beside you....if a fed libs 60 miles further than you and the birds are going to do 60 mph no point libbing an hour after them because they will run into your lib.put less birds in the baskets and crates...do this for 2 seasons instead of 22 hens and 20 cocks put 18 hens and 14 cocks and see if the returns improve.