My 14 month old RZ10 Rotozip is kaput. I have traced it to a faulty speed control dial. Their owner's manual has no information on repair parts, nor does the website. The customer service phone number is not open at this time (11:25 am eastern Saturday). They must have determined that no one uses their tools on weekends. I'm going to try a work-around so that the weekend isn't lost - I'm cutting out some plaster walls for a tub surround. Next week, I'll take time out of my work day to deal with the Rotodunces on the phone.