How do you remove Item #24, Boot? Is it just a press in or threaded? It's in there pretty dang tight. The wear ring has 2 screws that hold it in. Item #6 & #7. Do all of you use these screws to hold the wear ring in? All the wear rings I have seen, do not have these screws. New wear ring does not come with 2 holes. I have just seen press fit wear rings.