I am trying to reaassemble my USP Compact .45 after a hammer swap(to regular thumb hammer) and I am screwed up. I swapped the hammer, now I am trying to reinstall the safety/decocking lever, but first you have to install the slide plate and spring, but they were under tension when I took it apart, now I can not get any tension on it at all. I am dropping the spring and plate,in the frame, but if I turn the frame upside down, it falls right out.I was stuck at this step on the dissembly after moving to the 12 oclock position, because I was not depressing this same piece, thats why I know it must be under tension, but I can not figure it out. I AM STUCK!!HELP PLEASE!!!!