For the non direct drive whizzes. Here's what i found on one of my latest service calls. This drive coupler was changed (The other used appliance store said) 4 months ago. This shows the difference between an OEM heavy duty coupler and an off brand junker! If your burning through couplers you could have a wore out motor shaft. The end of this video shows a wore out shaft and how to tell that you have one. The only way to fix a wore out motor shaft is to replace the motor.