Here's a few pics.
Forget about those indents, they don't matter. I presume it is a repro. The originals I have have two, not three.
I can tell you what you need to concentrate on are the tabs that the plastic "nuts" are pushed on to.
I've put these together in 5 minutes, taken them apart, and spent 30 minutes trying to line it up. Then next time it is 5 minutes. Drives me crazy - I know sometimes not a far trip...