hey brothers, I am going to be pouring sinkers for the first time tonight and have read many many tuorials and all the precautions. I have everyhting I need but have a couple last questions. 1. how often should I spray wd-40 on the hinges. (or would motor oil work better?) 2.I will be makin flat no-rolls which require a core pin. I have read to keep the core pin oiled frequently as well. I have also read that even a small amount of moisture can cause a violent reaction with molten lead. so my question is...would oil have the same risks invoved? I know oil is not considered "moisture" but it IS wet!! I know this may be a self-explanatory question, but this is one thing that I DO NOT want to learn the hard way.