If you changed the springs (I am assuming the trigger, striker and plunger spring) adding a 3.5 connector will help. With out doing the springs they are a waste of money. Over travel stops are tricky. Stay away from the Jentra. Looks good on paper but wont stay still. The adjustable housings are hit and miss. There is a fine line between the sear failing to disengage and the over-travel being taken up. The surest bet is the ultimate pro 3.5. When fitted correctly it is full proof. More work but you get out what you put in.
"A quiet hit in the right place is better than a loud miss in the wrong place followed by 10 more shots on the run"
I was a handgun hunter, when handgun wasn't cool.....