Well, now that the horse has been bludgeoned to death.... twice.... I'll post up my experience.
Stock motor .020 over, 3000', fmf fatties, vf2 reeds, +4 timing.................
If memory serves correctly this is ABOUT the same as what you were running, correct?
I had 270 mains, at 3000 feet..... with the lid.....AT 3000 FEET.
Honestly man you really cant always go by the spark plugs alone. Ive been a banshee owner for a little over a year, but have had extensive 2-stroke dirt bike experience prior. I can tell you right off your motor needs to be rebuilt..now... but you already know this. Additionally, IMHO you were way lean. I know all bikes are different, but there's ALOT of experience here, and almost EVERYONE is telling you that you were lean. I honestly wish you would have run it with the 280's just to see where you would be. I would stake my spot-less, untarnished (bwa ha ha) reputation it would have woken up.
Either way, leave the "fucktard" "cock-sucker" bull shit on the playground. That is really childish, and its THAT EXACT stuff that makes people shy from helping someone.