so I recently got this mold. I have casted with it 3 times. I was trying to heat cycle it to break it in so each session was about 2-300 bullets total. I did use beeswax for lube on the pins and the sprue plate bolt and hold down. and I deburred the edge of the sprue plate with a stone when I first bought it to try and prevent this as it started scraping the top of the mold lightly and now its galled enough to lift the sprue plate a little and causes a little ring around the base that probably doesn't cause anything bad but I can see it and it aggravates me. I don't know what I'm doing wrong and causing this but if I can figure it out id be happy. Thanks