What Does everyone think about the Copper John Dead Nuts brand of sights? I was thinking about buying one. Are they durable? Easy to adjust? Are the pins Durable? Does the hardware stay tight after use? If given the choice would you purchase the Copper Juhn Dead Nuts Hunter or the Dead Nuts Pro? Let me know what you think, At first appearance this looks like a pretty tough sight. And does anyone know if you can put some sort of light on this sight? Thanks