Well I took a little advice and scheduled my truck to a differant dealer and asked them to check my truck on the SBDS Diagnostics tests. I was told the relitive compression for all 8 cylinders was zero% and the fuel pressure and leak down all passed. The tech told me they did not adjust anything but I now notice my idle raises and lowers with what sounds like a solinoid regulating it. This did help the rough idle slightly. Does any one know what was adjusted to change my idle as I described?