On my first attempt to purchase this grinder, I received a poorly sealed "open box". I immediately requested a replacement and received a new grinder the next day. She had no problem with anything I did to her. The steering column switch works great and the guard is very easy to adjust or remove. I have a problem, but it's actually Dewalt's fault. They advertise that it has a "quick release" for the wheel. Dewalt does not currently have quick release wheels. I have confirmed this with Dewalt. Your "quick release" is a hex key that you use to loosen the spindle nut, rather than the wrench found on most grinders. It is none other than the Bosch X-Lock™ system. Overall I am happy with my purchase. I gave 4 stars because I was first fitted with an open box and incorrect description "quick release" for the wheel. Otherwise it would be 5.