1350 yoke depth

[70CougarXr7]

Hi All,

Had a 1310 yoke on my diff, bought a new driveshaft and the guys from the factory advised to go with a 1350 yoke, so i did that.
Removed the 1310 yoke and wanted to install the 1350.

The 1310 yoke came of really easy, removed the nut and some gentle (real gentle) tapping with a small hamer and it came off.

Put the 1350 in place, screw on the nut and this is what it looks like....
Cannot be right , cannot get that nut to go deeper, have to much thread left.



Lenght of the 1310 and 1350 are the same,
Difference is the depth of where the nut goes, 1310 is deeper then the 1350...

How do i solve this?

Not
If have not applied the nut to the correct torque because i could not hold the car in place while i was trying that..