I've made some progress. I sanded, puttied, and primed the hull. It will need a little more work as I still see some print lines. I was able to get the radiator sanded, puttied, and primed as well. But it still need slot of work. I see far too many lines. I finished all the small parts they are ready for paint. I've worked on tht cones a little, I made the edge a little more square so the top cone fits better and the gap is more even (this was due to printing not the model).
As for the flap rods, I think I'm going it use some spare arms from my printer. The rodents are almost the same size. I will be cutting the black sleeve to where my thumb is in the pic where it's next to the flap. Not sure how it will look finished but I'm going to test it.
As far as the screw for the flaps and all other hardware, I just follow the list that was provided. I went to home Depot and matched all the sizes that were listed.