can't get pitman arm on...please help

yeah it isn't on enough to start the nut, I really don't wanna get the gearbox lose again... like to never got it on cause of the headers...but if I have to do that to get it on I guess I have no choice haah.
It'll just take some patience getting it line up perfectly. Just please don't force it on and mess up the splines. Can some one gently rock the steering wheel back & forth for you until it "pop's" on enough to get the nut started. Sometimes you need to walk away for about 15 minutes and let your arms stop feeling like Jello LOL. Then you come back & she falls right into place.