How do u guys change walkbehind or ztr's blades at job site or at your shop(garage)? My dealer said they use impact wrench to tighten the bolts. So almost impossible to untighten the bolt with regular wrench. I know home depot sells 12v and 14v wireless impact drivers with about 1100 in. ft. Will this work to tighten and loosen the bolt? Or can I just buy socket and extended ratchet to work? Need some input.