First, on the retaining clip, you need to determine which type you have, as I don't think anyone knows which cars got which type . . . the one that tends to break is gray and looks like it has a bunch of fingers on it. If you have that type, use a socket to evenly press all the fingers, and then pull to remove it while keeping the fingers pressed. Be careful, as many many people have broken them, and a lot of people just go buy a spare one in advance (fwiw, I used to have a spare one, but I can't remember if I still have it or not)
The centering spring is obvious once you get in there. IIRC I pulled mine, and it still centers decently (I can't remember if I did or not)
I am pretty sure I still have my install directions for the B&M, if you would like I could prolly scna them and send them to you (of course that would require me hooking up my scanner, lol.) anyway, I would be more than happy to give you a hand, but Romeo is an awful long drive for somehting simple like this.
