I am on 4th or 5th shop vac. I have bought one from Sears, Home Depot and Lowes. And within a year they stop working. I am guessing the motor is getting wet. I also bought a wet filter to help out. Still no luck. My current vac just quit on my after only two months. Not sure whats going on. Back in the old days a shop vac would last a few years. Any help would be appreciated. Thanks