Fitting the brakes to the hubs and verified the discs hit the backing plates, then against my better judgement, I consulted the included instructions, they state the backing plates must be trimmed to about 6 1/2" in diameter by a professional machinist. It seems to me after trimming there is not much backing plate left and it also appears this would remove the mounting holes needed to attach them, and thirdly, there doesn't seem to be much point in having them any more after trimming except maybe to keep dust out of the bearing. I am inclined just to leave them off entirely. Thoughts?

Thanks,

Robert