Seeing as how the sprue plate screw on a Lee mold will never stay tight, I decided to drill and tap my latest two for a set screw. First one went off without a hitch. The second one? Well, I broke the tap off in the hole. Flush with the surface, of course, so there's nothing much to grip to get it back out. I can sometimes get a pair of needle nose on there, but it's not going to turn. I tried heating it up, but no luck. I just ordered another one. I'm glad it was only a $18 mold, but then again, if it were a NOE, it'd have a $%#@ set screw in it already!