does it sound like the shift cable is stretched??

Ok i am pretty sure i have it hooked up right.
I noticed the cable will not pull the tranny lever into Neutral, so i hadx my dad shift the hammer into N and then it was still in R, so i gave the lever a little push and viola, it went to N.

We also noticed, that silver bracket that holds the cable near the shifter, they seemed to have put like 4 washers over the cable to take up some slack.
Still too much slack.

So does this sound like the cable being stretched??
How does a shift cable stretch anyway??
Should a 50resto cable work alright, or would it be the same??
Could the Hammer shifter be to blame?!?!?

I went and spent like 3 hours on it today, i tried taking the washers off, took like 3 ratchets to get reverse.

So i bought some bigger screws so i could fit more washers.
There was 4 originally. I tried different combonations and get it into low 1 but then it wouldnt get back into park.

I have 5 washers now and left it there because i was running late to a dinner, its all wacked up now. Hard to get into park and what not.

So if its not adjusted, how do i adjust it??