I too looked at this sissy bar made by Spaan (France). The 1 bolt mounting point on each side doesn't inspire confidence and reviews of the "foam/filler" padding isn't so great.
Buy this!!!
Also, there's a cheap Gen 2 in Las Vegas with carbon covers and a Corbin seat for $6995
https://lasvegas.craigslist.org/mcy/d/las-vegas-2009-yamaha-max-1700cc/7704373091.html
It's a weird glitch that happens with the integrated tail lamp installed. Everyone that has the integrated tail light seems to have this issue (me included).
Too bad for you no one is selling class/respect. Which one are you? Beavis or Butthead?
Pictures tell the story. One bag is melted at the bottom, but it doesn't affect it's utility. Neither bag has any scratches or tears in the leather. Aluminum panels have a couple small scratches.
Good luck...
$12k is a great price with just the akrapovic exhaust and stiletto seat. Maybe it was the timing (February) as the bike market really heats up during the summer.
I would take apart the airbox and see if any plastic debris possibly clogged your filter or got caught downstream from the airbox mod. Plugs shouldn't be bad on a 2020, plus I'm guessing you're not getting any misfire codes(CEL)?