I am a professional flooring contractor. I have put in many many many hardwood floors. I had one of these for 25-30 years. It worked perfectly. I rebuilt it a couple of times with an O-ring kit but that's it. I don't remember it ever being in the shop. I'm not the most caring of my tools, I put a few drops of oil in it every few times I used it. What finally did it in was that it was stolen. I had another a week later. http://www.amazon.com/gp/product/B0000224PN/ref=cm_cr_rev_prod_title