86 1/2 ton shortbed Ebrake equalizer questions

[Oldriginal86]

From the 1987 service manual: To adjust parking brake, jack up rear of vehicle and put on stands. Safety First!
1- Loosen equalizer nut.
2- Set parking brake 4 clicks.
3- Adjust equalizer nut until wheels rotate forward with a moderate drag.
4- Release brake, rotate wheels. There should be no drag. Done
Your system looks to be correct by the picture in the service manual.
The way it works is, right side cable sheath is anchored to the frame and pulled first along with the entire left side cable. Once the right cable has tension but not completely tight the left cable sheath is anchored to the equalizer won't pull further forward. At this point the equalizer will pull the left cable tight. Looks like the adjustment is just too loose by all the thread showing. On my truck I have very little thread left on the adjustment.