As soon as you get the springs, call her back and tell her it didn't work and get the pins coming. I'm sure you will find it is the pin that is your problem. Replacing the spring with one exactally like it is silly. Get the pins from Ruger and try them. If you are still having the problem, you can have someone knowledgable (or a gunsmith) deepen the groove in the old pins (since you will now have a spare pair). I remember having one Vaquero with the same problem, on that gun all I had to do is snap the pin in quickly and very firmly. Seems it needed the little extra bump to properly lock in. You could try tapping the end of the pin with a plastic mallet to make sure it is completely seated. If this all gets frustrating or tiring, just buy the Belt Mountain. No, no 'usable' accuracy improvement, probably some mechanical, theoretical improvement, but most of us will not be able to shoot well enough to notice. But it will solve your problems. 44 Man