There are a couple of things you might try. You could break up the railings into separate runs (for example, one for each landing = 3 railings) and see if you can wrestle them into submission. Another way would be to load a baluster family that looks how you expect this railing end to look, then add that to the End/Start instructions at the bottom of the Baluster in the railing's Type Properties. I use this second trick for wall returns with escutcheon on wall-mounted railings.