So far the 150sn seems not too bad where I am. Started a pier mount today. Ex Telecom PVC Pipe Terminal cover, its the perfect height and its white, samel colour as the scopes...very clinical. But filled with cement and steel it wont wobble. I will cement steel strap in with appropriate holes for the mount but it is a very simple and inexpensive approach ..so I mention it for others thinking about a pier. But with the pier in place polar alignment should not be a problem again.
alex
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