David, Nipping off a wood screw can oft-times work just fine. Just not the same as a threaded machinist screw thread. On bigger one's of that type it is possible to trim them and "chase the thread and put a slight bevel on the tip. But, on those tiny little puppies, I wouldn't do it. Too much like a make work project, to me. As for doing all of the rails, yes. Best Regards, Joe Garrett, RPT, (Oregon)
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