Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Hunk of Junk

Man did I have problems with this unit. I received the first one, which had one wheel with a flat spot on it and the other wobbled so bad I thought it may fall off. Amazon was great and shipped me another unit immediately!(thanks for the great sevice Amazon). The second unit arrived. I took it out of the box and still was disappointed with the wheels. I decided to go ahead and make it work. I brought the unit to my shop and plugged it in. It ran for about 5 seconds and sparks flew out the side of the unit. I sent it back for a refund. I figured with the Makita name, I would be buying a quality tool. Was I ever wrong. DO NOT BUY THIS PRODUCT!