Three quick "sound" updates:
1) Turns out most of the rattling was from my bottle cap lids intermittently banging away on the downtube and seattube while riding on broken pavement. While I continue to like my carbonworks cages, the low profile bottle cage bosses on my Addict don't leave much breathing room for the bottle lids. A couple hundred miles ago, I successfully addressed the rattlng with a thin neoprene washer between the cage and frame. https://weightweenies.starbike.com/foru ... 8#p1402408
2) I'm enjoying my Lumaray blinky and finally landed on an optimal mounting system. My Lumaray now hides cleanly underneath my Garmin 520 and doesn't use any room on my bar. At first, I intended to mount my Garmin on top of the Lumaray but realized that it'd be (aesthetically) too tall. I ordered a two-sided mount from Raceware Direct (RWD) probably designed for mounting a camera or light underneath, but the Lumaray hung too low. Now my poridge is just right with an improved two-sided RWD mount. Kudos to Martyn at RWD for making me a custom mount. Maybe you'll want one, too?! https://weightweenies.starbike.com/foru ... 7#p1402407
3) Last year, my Kogel PF86 BB with road seals was quiet all year long. I replaced it with an identical one this season. I've since replaced it and another due to ugly creaking. After much tinkering and multiple re-installations, I've gone back to OEM SRAM GXP (non-ceramic) and it's now every bit as quiet as before. Sad, but true.