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Message: <blockquote data-quote="Troubador" data-source="post: 3462622" data-attributes="member: 109211">AndyPicking up on what Barred Warbler said about a pre-existing problem here is one idea:I have no idea how your scope is constructed but if the erecting prisms were held in a 'cage' or frame and this was fastened to the optical tubes with screws, and if the screws, were screwed-in with power screwdrivers such as are used in factories, and (pause for breath) the screwdriver was set to too high a torque so that the threads in the relatively soft magnesium body were wholly or partially stripped.........This might be one way in which the prism assembly escaped from its position due to the inertial force of its own weight when the scope hit the floor.Ask the repairer to check for this and report back to you. If the threads were damaged it gives you some leverage.Good luck.Lee</blockquote>