Tire wear, what's causing this! ? ?

OKAY WELL I GOT MY ARMS BACK today a friend from work pressed in the new bushings and even did the ball joints for me. and wen tthe extra mile and took all the greases GUNK off of them. going to install today. i will update with photos. i will get home and remove the idler arem and pitman arm..

anything i should be aware of? i dont wan tto learn from my mistake.. !