I had a nice conversation with the good folks at Jard this AM. They've been making the front of the trigger safety configuation for around 5 yrs, said customers like that better. I prefer the rear safety, so does the guy at Jard. This fire control unit is around 10 yrs. old.
When you advance the rear adjustment screw for sear engagement, you need to adjust the disconnect screw so the disconnector barely brushes the hammer as it's cocked. With the AR, he said they like a hard brush, disconnector on hammer, not as hard with the 10-22.
They have instructions on their web site under "Manuals".
He said it was OK to adjust sear engagement until you couldn't feel any take up, just bounce the gun around and test it for safety. I like a hair of take up, just makes me feel better.
Good trigger, good folks.
DF
