Me again. Hi This time, I have a question about my vacuum cleaner. The motor runs just fine, and the expelled air comes out where it should (so it's moving air), but it doesn't suck where it should suck. Neither below nor at the hose end. I did unhook the hose, but it doesn't suck at the hose attachment point either. The vacuum is only about a year old, it's a "Sanitaire" Model S4170, Type A-1. A friend gave it to me when she decided that she wanted an Oreck instead. I read through the manual, but there's no mention at all of anything related to this particular problem. Does anyone have any idea what might be wrong and how I can troubleshoot and fix it?