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Message: <blockquote data-quote="Vipersan" data-source="post: 628250" data-attributes="member: 325666">..I think we will have to agree to differ here m8..If you stick a pole vertically in the ground and rotate a clamp around it with a pointer at right angles ..it remains at the same height ..If you tilt the pole backwards about 10 degrees ..and rotate a clamp around it ..even by a couple of degrees ...the elevation changes ....thus you are manually doing the job of the polar motor ..so compensating for the brackets irregularity ..you are already ahead of the motors rotation by a couple of degrees ..You could theoretically compensate for this by increasing motor elevation ever so slightly ..or decreasing dish declination ..a tiny bit ...but the motor and dish would never tuely follow the arc ..I realise these are tiny amounts ...but I can't see it any other way..rgdsVS</blockquote>