Moog upper ball joint grease fitting

[JasonE_05Trail]

I just received my Moog upper ball joints from RockAuto (P/N K6664) and noticed the grease fittings were not connected to the ball joints. Not a big deal, so I began screwing-in the fittings to the bottom of the ball joint and for the life of me I couldn't screw-in the fittings flush and straight. I didn't want to force it, fearing cross-threading or marring the threads. Has anybody else had this issue? I'm probably making a mountain out of a molehill, but I'm fearful of damaging a $45 ball joint because of a $0.50 grease fitting.

 

[Sparky]

The zerks are self tapping. There are no threads in the actual joint until it creates them. I'd prefer if they were pre-installed but w/e.