Oh, that SUCKS! So, unless I'm missing something, the only way I can trim away the edge of a pad is to first draw a custom shape, import that shape into Pad Designer, add the through hole, create a new symbol, and hope it fits. I'll have to do this three times. It seems to me that there would be a "trim" feature kind of like in AutoCAD, but I guess not. Maybe it's easier just to buy a Gerber editor. Does anybody have any suggestions about which Gerber editor is the easiest to use?