I have a 19-6 that I bought at a gumshow. It has obviously had a trigger job at some point. When using federal ammo or Federal primers I have never had a light strike problem however other primers and ammo will cause misfires. I recently took the crane out and cleaned it, this was the first time I've done this since I've had it. I just put a couple of hundred rounds through it and had one light strike, normally with this ammo(Winchester primers) I would have at least one light strike per cylinder during double action fire. I can only assume cleaning the crane and cylinder assembly had to do with the improved reliabilty. Now I would like to know specificly why. What part of the assembly is so affected?