Urg, still waiting for mine as well. Not a good outlook ...
Might have to get the SL7 clamps, too, as my arse is getting sore.
I also had the headset coming loose. I put some lock tite on but it seems to still get loose. Did you find a more permanent solution for this or are you just re-tightening after every ride?
what exactly get's loose? once you preload the bearing and clamp the stem it should hold even without the top cap.
An issue I've had with different bikes is incorrectly "expanded" expander plug. sometimes it expands only on one side which creates very little friction even though it seems like the plug is tight.
What I now do with every build is lightly grease the "cones" on the plug and pre-expand it so that it just fits inside the steering tube and only then install it.
