Hello Dusty,
I use a bunch of Saeco Molds. It is odd, but some of the molds heat up faster than another of the same caliber. I have used an electric hot plate to pre-heat my molds, but you can get them too hot as well. You can also, put the mold on the heated rim of the casting pot.
I'll tell you what though, I like the Saeco Molds best of all I have tried. I have Hensley & Gibbs, Lymans, RCBS, LBTs and a Lee. I have moved to all Saeco molds.
One of the things I like about the Saeco is the Handles. They are sturdy and substantial.
Harold