Tuning Impact Mk 3 trigger pull question

Please forgive my art I shortened the small spring so it was just maybe a coil or to two over the hollow set screw with the ball and spring back in place I tapped it back together on a hard surface to put some bend back onto the part that holds ball into place the small spring in place is pretty long I was surprised at the length of it I also shortened the other trigger spring and polished engagement areas of the trigger carefully not to change any angles just to smooth it out then just dropped the trigger shoe to as far down as I could and still clear when cocking

Thank you dear.

I am just wondering that why we cannot remove the spring and the ball from the end where we enter Allen key. 

Looks like there would be a step inside that would not let the spring come out from the Allen side.

Thank you.