Trying not to beat a dead horse here but I have spent a day or two researching this topic and since this is one of the only 4th gen threads I have found I will share my findings.
The topic of warming transmission fluid through the radiator was well explained by a Ford transmission engineer...
I made this video if anyone is still having problems with their stuck lumbar support. I also found the motors on ebay for cheap.
https://www.youtube.com/watch?v=QsP5ad26AyU&feature=youtu.be