[reeferman]

At the shop we had better luck soldering the pins. If you look at the end of the pin, most of the time you can see the wire. And most of the time the wire is sticking out jusssssst enough where you can scrape it with a knife to clean it off. Add a little solder and you are good to go.
I figured our crimper didn't work all of the time because it never cleaned/soldered the wire and pin. Just jammed them together.
Phil