I am using Wheel weights, Lee production pot and a Lee 45Cal 300gr. Mold. The problem is I cant seem to get the lead to fill the mold enough to give me the crisp lines in the bullet. They seem to come out rounded off like the lead isnt settling into all the crevices in the mold. What could be the problem? I have tried running the lead hotter, the mold hotter and tried to avoid the shiny wheel weights. Any advice is appreciated.