I have an old style USP 40(now 10mm) I converted to LEM. I have had many LEM HKs before and currently. I knew i had the old style USP so i bought the LEM kit and the extra parts needed. My only concern is, if i do not rack the slide nearly 100% it does not "precock" the hammer. I have not shot it yet, so no clue it during live fire will be an issue. Didnt know if anyone has ever seen or heard this before. Any experience or thoughts would be appreciated. Thank you.