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do you even Dremel, bro?
(can email a template to print/stick/cut from 0.5mm carbon sheet. Attached with 3M VHB 5952, although it only weighs about 6g, so a handful of white sticky pads would probably do fine)EDIT: N.B. When DS crank is at 3 o'clock, air at zero yaw can pass around the bolt, between the back of the crank arm and fairing, 'into the void', presumably causing a momentary huge local increase in drag 20% of the time... Could fill the void with foam, or could be covered in little holes (to vent, and maybe to behave like Zipp dimples) to induce some turbulent something to smooth the laminar so-and-so. #thoughts!
Finally, a couple more DIY bits: a British Rail/Halifax (not the place) -inspired Garmin mount (for my phone that isn't a Garmin), and a spider fairing for the Miche Pistard Air crank (essential structural component, no sticky pads here!!).