I was trying to use my bs today to cut the bow front for the window seat when the bs started shaking rapidly and blew the blade off. I shut it off and unplueg it. When I opened it up I noticed the tire had slipped of the wheel. This saw is only a year and a half old. Is this normal for the tires to wear out this quick? I am waiting to hear back from Grizzly to see what they say. I am supposed to have this dopne by wendsday. OH well one more stick in the spokes.