Thanks, mh. I had crafted my own response but never posted it. See below.
OK, I’ve answered a few of my questions by digging around. Managed to calculate the height properly by calling a function that uses the $(window).width() method and calculates accordingly. Got inspiration here:
I am also having problems with items disappearing too soon, before they leave the frame. Also not being able to scroll all the way to the bottom to get the last item above the footer. Saw this in another post here on the forum…
Will keep digging.