Any peticular reason you want pyramids?
I’ve been molding my own flat bank sinkers for years.
I’d recommend that style of weight to anyone Catfishing.
Side a snap swivel onto your fishing line instead of the weight.
Snap into the weight. I use a small zip tie on the flat bank sinker and attach the snap to the zip tie.
Allows for quick weight change. Also when your weight is snagged and zip tie or the snap will break.
Removing your weights during travel on/off the water protects rods from damage.
My flat bank molds are 2-3-4-5 oz and 6-8 oz.
I should have another 50# lead coming this week and I’ll be pouring 3&4 oz sinkers and probably 1000 jigs for pitching plastics.
I’m probably up to 8 molds and they’re all paid off so to speak.