Yikes!! I pulled my plug out a day ago and it was no where near tan....it was white as I have ever seen a plug. My elevation is between 4000-5000 ft, and it's farely dry. Temp- 40-50 The rest of the bike is stock: exhaust, air box, and all other jets besides the 170 main and 48 pilot. With my elevation, temp and humidity I should want a leaner setup then the cali, texas guys, so it makes me wonder how lean your bikes are running. I think i'm going to go richer on pilot 50 or 52, main 175, leak 60. just keep messing around!? oh yeah, I'm also going to get a richer needle. Any other suggestions?