Maybe I'm looking at them wrong, but one picture looks like they have a vertical eye, and the other they look horizontal. Assuming I'm just crazy, you could drill out a weed guard hole in your replica to reduce weight, and then maybe begin shortening the neck to see if you can get close to the same weight. Last, you could try filing some of the lead off of the two flats behind the nose. If you get close to the weight you want, you can alter your mold to match your changes. I don't know if that will help, but it is what I would try. And using a harder lead can't hurt, since the blade will be banging against the head on the retrieve. Good luck.