You will make 9 easy with a little more practice. RT is what makes the pro’s so good. It takes practice to get those down and few of us have a track close by to get much. Looks like you had a blast.
Don’t know of anything that will stand up to brake fluid if that is what you are wanting. It is just some nasty stuff. Thinking of trying powder coat on mine when I have to do a rebuild, but don’t know if even that will last very long.