For the 3-4 years I've had this thing, every now and then it sucks up a twig or pebble, and I have to take it apart to remove that object, and then it will run fine for months again. But, lately, more and more, it winds up stopped. I fiddle with it, it starts going, and a few minutes later it's stopped again. I figure there's probably a bad gear or something somewhere. But I look up rebuild kits, and yowza! I could easily wind up spending more than a new unit if I don't know which specific part(s) to replace! So, how can I figure this out?
