I am in need of borrowing a sight pushing tool. I have a set of warren tactical sights I am trying to install on my G34. I have the old sights off and I have the new rear about half way on but I don't want to hammer it in there for fear of damaging it. It's in pretty tight right now. I shouldn't need to file this thing right? Also, any suggestions where I can buy a 3/16 hex tool that would allow me to get the front sight installed?