I just did my own quick and easy job.
I pulled my trigger lightly until it stops (must be cocked)
Then I got a paper cut a little 1 cm x 1 cm square and slid it under the top part of the trigger and taped it up. Then I got cardboard cut a 1 cm wide x 2 cm high piece and tape it at on the bottom groove. I took off the grips and taped under for this, becuase it was much easier. Now just test fire see how it is.