Thanks for all your help. Hopefully this is the issue because if it isn't I'm not sure what else to look at. Here are the photos.
The measurements are primarily about the long bar on the striker.
0.464
0.194
4.691 long from tip to back at longer point
4.622 long from tip to back at shorter point--- not sure where you mea
It seems like the striker is badly dimensioned on the front where it would contact the sear and that's allowing it to slip off before the disconnector resets. Would you be able to take a photo of the front of the bar and take some quick measurements so I can make sure? Worst case scenario I'll build up some steel on there, bring it to the right dimensions, and case harden it.
EDIT After looking at this some more I've found that there's a sweet spot on the trigger where I can pull just enough to have the sear clear the receiver and let the striker go forward but it won't reset. What the heck could be causing that? Whatever it is it's happening with the new semi auto trigger group and the Norinco and the IMI I had in there before making this semi auto group.