Just purchased and installed a new Sears 3/4hp garage door opener with a screw drive mechanism. I am looking for durability, speed (on the box it claims faster speed over 1/2hp), and quiet operation.
Installation was straightforward and simple, but the long screw inside the channel "chatters" during operation. Still chatters after disconnecting the door and running the opener itself. The door itself opens/closes quietly...the noise is from the GDO. Sears claims this model never need lubrication.
Also it does not have any apparent speed advantage over my neighbors' 1/2hp openers. But mine is noisier!
Otherwise it works, but I am not happy with this expensive purchase. Any suggestions other than taking it all down and returning this to Sears?