I was able to replace my lightning connector. The last few steps are quite tricky, and the guide could certain use additional photos or steps for reassembly. You have to work very slowly - take pictures of the pieces before you disassemble the speaker/lighting unit, so that you can see how everything is put together - especially the tiny metal washers for the lightning screws, the microphone boot, the audio out liner - parts that have to be removed from your previous unit and transferred to the replacement unit, which for some reason doesn't include them.

I also had to go out and buy another flathead screwdriver to get the standoff screws out - it should be at least 2.5mm wide, and I think around .24mm thick in order to fit. Total repair time over 1.5 hours. Also, when putting the logic board back in, be sure that the middle or top connector (of the 3 at the top) isn't stuck underneath the board before you screw everything back in.