Here are a number of threads on how to replace your reverse gate cables:
- cwoa8vr's shift cable http://jetboaters.net/threads/07-to-09-230-series-shift-cable-replacement.3833/
- Julian's reverse gate cable replacement write up with part numbers
- 07-09 part number is CCX63318 (also referenced in the 1st thread above)
- Reverse and steering cable part number cross reference https://jetboaters.net/threads/seastar-teleflex-steering-systems-and-cables.10706/
- Scopeusa's change '08 https://jetboaters.net/threads/changing-steering-cables-sx230ho-in-an-hour.15181/#post-262621