I got a hold of some spare Triad spacers from a very helpful ST member, and the Aerus stem direct from Blue.
I'm having a hard time working out how to secure all those aero spacers from spinning around independently from the rest of the steerer. I read that I should be putting an M6 bolt through the smaller hole in the stem, down through all the spacers (which will stop the play between stem and spacers), but I'm at a loss as to where it's supposed to screw into to stop the play between the spacers and the fork? There aren't any threads in the faring section of the fork to secure the bolt.
To keep the aero spacers flush with the aero fork profile, I had to remove the headset dust cap thingo. Is that going to be ok? I noticed it has an o-ring inside the cap, so just wanted to make sure I'm not going to have any water / dust issues by removing. It's not like I'm going to be training with it regularly in the wet, but it will be gently washed often (because it's my baby).
I'm also a little confused about the steerer tube sizing and what that means for the build. It needed a 1" headset for the 1" steerer, but the Aerus stem and spacers are 1-1/8. I got an adaptor / chock thingy to increase the diameter for the stem/spacers. Is that how it's normally done?
The 1" - 1-1/8" adaptor is a bit taller than the length of the steerer. Can I just get a 1-1/8 star nut to secure the topcap and cinch the fork tightly to the frame? Or should I trim it to the same height as the steerer tube and look around for a 1" star nut / top cap (they seem harder to locate?).