I'm swapping out the front sight off my 20 inch Colt Hbar. It is a standard post front sight, I found a replacement at a show. The replacement was a take off and already drilled, I took a chance on the holes matching, and they did. The problem is the taper pins, they are opposite, old sight to the new sight. My question, can I just drill it straight out and pin it, or do I need to keep looking.