TPS doesn't need to be 0.97V. That's just a myth. Acceptable range is 0.51V to 1.24V. Anything in there is perfectly fine. Upon startup that ECU takes a baseline idle reading and assigns that as a variable x indicating closed throttle. It then assigned a value to add to that number (I think it's 3.5V but not 100% sure) that indicates WOT.
Really you should be less focused on what the idle voltage is, and more focused on if the TPS voltage sweeps properly from idle to WOT. Nothing wrong with setting it to 1V, but don't lose sleep if it's 1.05V that's still good. Ford just slapped these sensors on and didn't calibrate anything. If they are out of range, they generate a code.
ANyway, code 67 is regarding not pressing the clutch in, or having the T5 in neutral. The painless kit may not have the provisions to connect to the clutch switch and the sensor on the top of the T5. If not, you may need to work-around this somewhat. It has a slight impact on idle quality, but don't think that is what is going on here.
BTW, you are running the codes with engine off AND with engine on correct? Have you done the cylinder balance test at the end of the code reading procedure?