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Hello all! I am mounting an Explore Scientific 8x50 Right Angle Erect Image Illuminated Finder Scope on my Skywatcher Dobsonian. The original Skywatcher mount only had one bolt hole. The Explore Scientific base requires two bolts. I was told to make sure to have the primary mirror cover in place and to place a cotton sock over the secondary mirror. My concern is drilling into the tube itself. Are there any other precautions I need to take so that that it doesn’t look like it was drilled by a bunch of Wallys? LoL! Greg