LOL...trust me, you will not be disappointed with this set-up. Ask around on the site, and everyone who runs one will tell you that it is the way to go. I have not heard one negative thing about it.
As for the stripping of the other servo savers, I would have to ask if you are using the right one for your servo. Each servo saver either comes with an adapter sprocket for a particular flavor of servo (HiTec, Airtronics, Futaba, etc) or is specifically made to match a particular flavor of servo.
As for the servo being ruined, I would say that you can try and get a replacement gear for the servo from the manufacturer or you could get a new servo. Many servo makers have replacement parts, you just need to find them.
The way the ProLine system works is:
1. Replaces the plastic steering posts with metal posts.
2. It replaces most of the steering linkage system.
3. Steering servo saver is built into one of the steering posts. Thus you simply use a normal steering horn on the servo. Connect the linkage from the steering horn to the servo saver post and go.
This is a rock solid kit.