My Dewalt SCMS is making some insane noises when I let off the power. I think it is the bearing on the blade shaft that is making the noise. It sounds like it is trying to seize. Anyone ever repalced the blade shaft bearing on their Dewalt SCMS before and if so, how difficult was it? I figure that if I can find a repair station to work on it, it will be a week before I get it back and that is too long of a wait.