OK, just got off the phone with Karl from Racers Edge. I now know what I need to do to get Ray's car in a better place.
I will say this,(disclaimer: this is my opinion only not a reflection on Racers Edge as a company) That being said: There is almost as much fiddiling with the RE peices as I did on the lathe with Eric's. I understnd why RE did what they did, I just don't agree with the method. I would say if you don't have a ton of time to fiddle with this I would opt for the poly peices. I can't say for sure you will loose x.xx amount of time with this upgrade and therefore I don't know if they are worth the time and money. I'm doing it because I have all the tools at my disposal and that is the type of person I am, no stone unturned, if you know what I mean.
If you really want these give me a all and I will talk you through what needs to be done to get them to work properly.