This is embarrassing. Yeah, looks like this is where all the complaints should have been going all along, I guess thats how recalls are started.

You do, ofcourse, need evidence. Seems like they accept pictures though, so i assume plug blow-by and testimony would do for a minimum.

https://www-odi.nhtsa.dot.gov/Vehicl...E&gclsrc=aw.ds

I swear at some point I found a recall for this that simply recommended we re-tighten the plugs, can't find it now though. What a slap in the face that'd be. It'd be hard to pin a specific case to honda though I'd imagine, given that its a commonly self-serviced item.