TurboCad Pro V16.2 Whilst working through the 3D training manual, rotating models to view from different directions was slow and controlled with a half rotation typically completed in the space of the screen. The centre button of the mouse being used for this process. Now that I have started my own work which is physically relatively small, say 25mm/1", the model viewing is very insensitive (fast) with only a very small part of a rotation being completed in the space of the screen. Adjustment of View/camera/scroll speed has no effect. There must be a simple way that I have missed of controlling the mouse to model movement.