I have a new S&W 442. I was told by a CCW instructor that this type of gun often needs a trigger job, to make the trigger lighter. I don't detect any bumps or unevennesses in the pull, though I am sure that if the pull were lighter it would be easier to use. What has been others' experience especially with the NEWER versions of the S&W 442 or 642? (Older models may have trigger set lighter to start with...)