I just recently bought a 1998 model Oneway 2436. It is in beautiful condition. I am currently turning a large cedar slice on the outboard side. Every time I start the lathe, a whining sound comes from behind the door. The whine stops when at full speed which is about 300 RPMs. This whine has never happened before, even on some large 18 inch bowls. What is the probable cause of this? My belt isn't very tight as I just use the weight of the 2 HP motor. Is a 2HP motor underpowered for this?