Today i had a strange problem... I put down a new floor in my home and I was using a belt sander to sand the floor. I had this great idea of hooking my my central vac to the exit to the dust bag on my sander. When I turned the sander on it would not run with the vacuum turned on. Made no sense to me. if anything it should have run faster. Even if I turned on the sander first then the sander it would stall the motor right out. Any ideas?