I just went through this on my 07 Endeavor. The passenger side cable wasn't pulling far enough to release the latch on that side. It had been this way since we bought the coach 1 year ago. It would release about half the time. Seemed to depend on how level the coach was.
After looking at how hard the adjusters are to get at I decided a big hammer was in order (well, not all THAT big). I just tapped outward on the upper bracket that routes the cable down to the latch mechanism.
I bent it outward about 3/16" and effectively "shortened" the cable. Works better than new. Took longer to go get the hammer than it did to affect the repair.
If this doesn't make sense and you need pics let me know.