Mike, I totally agree with everything you just said. This will be my third Mihec mold. I am looking forward to it. With my .402-160, all I ever cast is with the penta pins. Haven't tried the round hollow points with it yet. I find the round hollow points drop better with my .359640 though plus the penta pins look like they are just a touch undersized for the meplate. The round hollows drop from the mold without even needing to bump or tap the mold at all.
I find that 700-730* works very well with my brass molds. Warming the molds up on the melting pot while the lead is heating up does the trick to where I am getting keepers on the second pour and often on the first pour.
I clean the molds first, lube them same as you do, heat them up and cool them a few times, then start the magic. No smoking the cavities, no release agents, just run the cavities naked and am getting great results.
Here is a pic of some of the .402-160s with the penta hollow points.