So, I had what appeared to be a disconnector problem, specifically that I hadn't milled the lower lug back far enough to allow the disco to clear the slot. it turned out to not be the problem, or at least milling the barrel didn't cure it. If I had stopped and thunk about it, I would have just taken out the recoil spring and felt where the disconnector was making contact. With the slide forward, I guide the hammer down. Keeping the trigger pulled, I retract the slide over the hammer. I then pull on the hammer, and it goes "click" as it goes to full cock. The slide is failing to bring it to full cock. As I said earlier, the rails were cut well within spec, and there is no daylight between the edges of the frame top and the top of the slide's grooves, so I know I didn't screw this up. On closer observation, comparing this slide with a USGI one, it looks like the part of the slide that contacts the disco has been improperly cut! In these pictures, you can see all sorts of daylight between this surface and the top of the frame. My rails are better than they look in these puictures, for some reason. So, where am I at, and what can I do?