I'm running a Laminas 1.2M dish on a Clarke-Tech diseq motor, albeit in quite a sheltered spot. It is a very lightweight dish though. There isn't any apparent backlash thus far though the larger dish made the existing backlash on my old Technomate motor very obvious, hence the need to replace it. It may be worth a go, but if your mount is in an exposed place I'd consider a polar mount and actuator.