(Was that a reference to the vintage of the thread, or the literacy level of the poster? )
This is rude. There are plenty of people who can't spell worth a damn, but are knowledgeable mechanics and friendly guys.
I thought the CPS either worked or it didn't. I had no idea that they could fail by changing the timing- that could certainly be the problem I'm having with my truck. So bringing up an 8 year old thread opened possibilities to me which I had previously dismissed. After 4 months of work and $1200 worth of injectors, I'm all about finally figuring out what's wrong with this truck.