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Message: <blockquote data-quote="moonbase" data-source="post: 1155841" data-attributes="member: 178786">The weight of the motor with the dish on it should naturally have a tendency to tilt forward.If you loosen the top nut above the pivotting saddle on the M16 main elevation bolt the whole assembly should automatically lower its skyward aim.Tightening the top nut above the saddle assembly should raise the skyward aim of the dish.In practice, with a 1.2m CM on the motor at a UK location the bottom nut below the saddle assembly does not need to be used until you have aligned the dish and wish to lock it all in place.You could back the bottom nut off out of the way and let the top nut do all the work.If the M16 main elevation bolt is rusted up the bottom nut may have to be used for adjustment. However, applying some machine oil to the elevation bolt should resolve this.</blockquote>