I've adjusted the shoes outward, would like to tighten up the cables up a bit as well, so parking brake works as it should..where's the adjustment located? Chilton is its usual vague self, not a great picture of parking brake handle mechanism, I pulled off the small panel from the rear of the center armrest, and didn't see any mechanism for adjustment..do I have to remove the whole armrest to access adjustment point??...thank you in advance...