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Humpf, I'm subscribed to this thread but am not getting notices...Would it be easier to drill them for 1.55 x 5 rather than 2 x8?.
Aside from the about 30% I ruined and having to set everything up and back again for the different size, the ones that came out well came out really clean (note the above pic).Any success with drilling for the 2mm x 8mm vials?.