I recently bought a full size USP 45 & as you all know the triggers aren't exactly super smooth & light. I would like to make the trigger a little lighter and more usable. Would a 12 lb Wolff hammer spring be the way to go to lighten a couple lbs or does H&K make a light weight spring of higher quality? Eventually, after getting to know my pistol better, I will probably tear it down and polish the internals to smooth out the trigger feel. I want to be able to use it for a SD pistol so obviously I'm not looking for a comp. kit or 3lb trigger. I've heard a little about the LEM trigger kits, but don't really know much about them. Any advice would be great. Thanks.