Update: Here is what I did to make this work. Soldered the end of the Jagwire cable after I cut off the end. Threaded through the hole then up shifted to make both the cable end and hole you have to thread thru in the housing visible(little cover removed). Put a small dab of lube in the housing hole. Downshifted until the 2 holes were lined up as much as they came from the mfg. Got the cable to thread through the housing.

The other side went off just as in the instructions without a problem, but I did solder the end of the cable and bent it slightly per Parks web site.

I think this is a manufacturing tolerance issue as others have had the same experience.

For those of you that have done this with no problem, I still have one question for you. Why does Sram supply the shifter cables installed when you have a new set?