Your trails are wicked cool man, youre lucky. I got a small trail to ride, but mostly just Blast around the field. I also have an 05 Blaster. Ive had it since 05 got it from a Yamaha dealer but im 2nd owner. Stock except for Vito oil block off kit.
I’m not really sure what’s up with that. The motor might have a stroker kit, not sure yet. I will foul plugs a decent amount so it’s running rich for sure.