pivoting portion that the wheel hub bolts to and the street elbow plumbing looking thing that bolts tot he axle. That is what I wasn't able to get together. I've got another 1/8" or more before I have a chance of getting the snap ring in place. Mesicks claimed I ordered the correct pieces, so I had them send out another on the assumption that I screwed it up somehow. Hopefully I'll get it together this weekend. This week would have been rough enough on its own with the mess at work, but massive (ok maybe not that massive, estimated 3 pints. A stick poked me in the leg juuuuust right) blood-loss on Sunday afternoon has left me a bit foggy all week.