Managed to get chapter five out. It needed a bit of reworking before publishing and I went back over it to add some more back story which I realised needed to come in here rather than later, or various character or behaviour statements would not quite work.
Since publishing chapter 5 the story has passed the 200 reads point and went back into the charts at #72. I know these things are all relative, but they do give you a bit of encouragement. This is much more fun than other writing projects where you don't get any feedback until you've finished...