Thanks for the help. I had a great conversation with Steve at MTS. He suggested that I reset the tuner and check the SWR at 14mhz. If the radio is seeing a high SWR it will fold back the power. This is regardless of how good my antenna is tuned.
He also recommended that I follow the service manuals instructions on reseting the tuner relays. Hopefully this helps anyone out there who finds this post at a later date.
He made it clear that the 703 has very little RF power to work with so that is why it is harder to find a good tune (impedance and reactance) as where the Pro has 3 variables and a lot more RF power hence the difference.