Thanks - I think that one line did make quite a bit of difference. I had been playing with these settings but they were not working properly and this line did make improvements.
I am sending over another YouTube link through direct message - it is close but not 100% there. The vertical stretch is not expanding all the way. At the beginning of the video, I show through the console browser inspector that the canvas is in fact the right size but the “vertical render area” is not being stretched. There is also a weird displacement sometimes after removing full screen.
Edit: Attached a snipet of my gamename.html (aka index.html) regarding the canvas section.
link text