We purchased a new home. Got a Liftmaster 8550 installed through the builder, which is a nice belt unit. However Ziegler Doors installed really heavy doors that most of these new Irvine homes use for the garage doors. Apparently when our garage door didn?t open, the technician we called to give estimate mentioned that they know these heavy doors aren?t really supported in the long run by these belt drives. Part broke down due to supporting these heavy Zieglar doors. Ziegler knows the Liftmaster they install will last 2-3 years and will break down afterwards so they will get a service call a few years down the road. The tech recommended Liftmaster 8557w a chain system, which he wanted $700. Would complaining to the builder do anything?