Jabonee, it is a real pain sometimes. I have a Max 28 and best way I have found is to make sure the deck is on a surface where the blades can rotate easily. I lay down behind the tractor and rotate the shaft a little at a time until the splines mesh and slide onto the PTO shaft. Obviously you have to pull back on the spring loaded collar as your doing this. I actually have a harder time hooking up the brush hog to the back PTO! Hope this is what you were referring to and my explanation was helpful. Good luck!
Dave