Get the Wilson kit and follow my directions.

Also, I would'nt go bending the sear spring without having a trigger pull gauge also. 38-44HD45 has the leafs right, but if you make it TOO heavy, there is no way to go back.
The rule of thumb for as light as you should go is 1lb on the sear leaf, 1lb on the disconnect leaf. once you go below that your risking doubling or full auto.

If you want to play with a 1911 trigger weight you have got to have a pull gauge.