Gee Trevor, for an unmodded camera, I think you have to be pretty happy with that!! Tight focus and low noise for the equipment. Awesome compared to some of those early Pentax posts!
What software did you use to stack? I'm getting very suspicious of the washout of colour when I stack even a couple of frames in DSS. Probably just my lack of knowledge/experience though.
Heading in the right direction! Your focus is also much improved here.
