Last week I bought a new sig TACOPs .45 ACP 1911. I disassembled it (there was resistance when I took the slide off the frame) and cleaned it. When I reassembled it I could not get the slide to completly fit back onto the frame (left about ¾ of an inch of the frame showing). The plunger lever was not flush with the frame and I coudn't push it down with my thumb nail, or a hard plastic cleaning brush. I couldn't get the slide over the lever. I called Sig service and they gave me a FEDEX # to send it back to the service dept. No range time with the pistol and it's already going back to the service dept. - and now It's going to be 2-3 weeks before I can try again. This is the first problem I have had with a Sig product and I have owned a few. I wrote Sig a letter - mostly complementary - but let them know how disappointed I am. Hopefully they will make it right. We'll see.