Need Help With Nelson FTF

First topic message reminder :

Just got my Nelson and I'm on the line now trying it out. Shoot like a house a' fire! But! Every few rounds it doesn't pick one up. Probably too heavy of a hammer spring. But my main concern is that sometimes it goes click not bang and the rim has no imprint. Not a light strike. NO strike. What's causing this?

In my experience, as a Range officer at a large club, Most problems with any conversion, Nelson or otherwise, is due to the Springfield ILS system. Gut the mainspring housing and put in conventional parts and I can almost promise you the problems will dissapear