Yep, it was the cable, did it myself.

Most likely, the string has stretched also as it is the original from'99.

Which will cause what effect, does twisting the string increase poundage, or the cable? I always thought the bus cable increased poundage as it was shortened. Which also increased draw length, so you would have to twist the string to get back to spec.

Will I have to twist both to get the brace height back to spec @ 5 7/8"? Do I have to twist both to get to the correct poundage?

I double checked the factory cable length before ordering the cable, PSE only gives a "cable tune" number, and you have to look up the length in their tuning book, which I had done.