Actually, bending the sear spring is the last step, and often an unnecessary step in a good trigger job. I trigger job involes cutting the hooks on the hammer to the proper height, cutting the primary and relief angles on the sear for proper engagement with the hammer, and polishing the hammer, sear, trigger, and disconnector with a series of ever finer stones. If this is done properly, you can take a 4 1/2 lb trigger down to a 3 1/2 lb trigger that breaks cleanly with no creap and do so without ever touching the sear spring.
It's not a partularly hard job to do, but if you don't have the $200-$300 worth of stones and jigs, I wouldn't attempt it. Unless you plan on doing a number of them, you would be better off taking the gun to a good gunsmith. .........but don't just bend the sear spring.
