Well, not great so far. I found the tap set I need but promptly broke the drill and the tap. Frustrating. I did find another bit that works and I have self tapping sheet metal screws which will take the aluminum. The problem I am having is getting the holes perfectly aligned. Even when using the draft gear box as a guide I cant quite keep the holes straight. Then when added the additional 2 holes to screw into the frame I cant get those aligned either. I am thinking at this point it might be easiest to use the aluminum as a shim and support and drill new holes into the frame. If i need additional spacers I have those in various sizes. I have done all my "easy" ones from Lionel and Atlas, this is my first challenging one, so a learning curve, no doubt.
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