The front axle holder pivots on the pass through for the pto. That part is $153. There is a grease zerk on the pivot that gets missed. Either the pivot pin/pto holder housing, or the actual axle holder gets worn. There are also shims behind it for front to back movement. Many times it is the little ball joints causing most of the play. If you don't want to pay $45 for each of the little guys(#90). I usually take a mallet and smack the ends of the aluminum, right next to the ball socket. It tightens up the joint. I would inject some grease first with a greasing needle.
Good luck.