77 K10 U joints?

[jcondo]

So im in the process of changing front ball joints, rotors, wheel bearings, seals, and u joints in my 77 K10.
I have finished the passenger side with out any issues, just waiting on brake pads. I have the drivers side completely torn down and pressed the u joints out. Upon pressing in the new U joint into the shorter axle half I successfully broke the cap out.
Went to the parts store and purchased another one, got it installed but the caps are not flush with the yoke on either shaft. I attempted to install the axle but I cant get the u joint past the hub casing.

So my question is, did they use different u joints on the drivers side compared to the passenger side? The u joints I used are a 371 moog.

Thanks for any info.