How do I adjust the length of these cables (pull cables, not electric)

[Darmok]

I have three of these pull cables going to my convertible tonneau cover motor. I need to adjust the length:



From what I can see I can only make it tighter by adding spacers at that nut.

But I need to lengthen it, right now the pull is too tight.

What am I missing?

[earthworm]

The cable clevis eye(in the pic), is that without a nylon bushing ??

Of course, a bushing here would make it tighter..
Can the unit that actuates the cable be moved a little ??
How much shorter should the cable be ?? maybe there is an adjustment at the other end ??

[Darmok]

Can't reach the other side even to look whether it's adjustable there. The lever is for the emergency release for the convertible top.

However, now that I study the photo I think I can just bend the plate that's holding the nut a little.

I definitely don't need much more. It's just a new part motor assembly that is a tiny bit different. This cable disengages the whole motor and right now vibrations from the motor itself set it off. Duh.

The other cables don't give a real problem yet (tonneau cover lock) but they are supposed to be even length.