Hey guys, I'm leaving on a road trip on my XR next week and while doing some maintenance I went to change the plug and found this: What you can't see in the pic is the tiny white balls on the end of the electrode. So i know it's running lean... I thought i heard it pinging last week during an enduro when I had it WOT in 5 and 6 gear on the road sections. A couple thoughts, let me know if you think i'm on the right track: -I cleaned and re-oiled the air filter about 300 miles ago. The first time I over oiled it and it wouldn't start. I cleaned it and oiled again, just spraying the filter once over with the oil, then massaged it in. Could i have under oiled it and it's now getting too much air? -I haven't had the valves adjusted in oh, 4000 miles :/ I don't know how to do it and haven't had the money to pay a shop. It doesnt tick and starts easily and runs good- no pops or backfires. My bike only has 7,000 miles on it and I maintain it pretty meticulously (except for the valves) and don't beat the crap out of it. -one of the exhaust flange nuts was a little loose, but I don't think it could suck air in through there. All the bolts and clamps on the intake side were good. I don't want to take it on the road trip and have a piston melt... i'll be doing sustained 55mph on most of the back roads. It doesn't pop on decel, which is why I didn't think it was running lean to begin with, and like I said it starts easily and runs strong. I always run premium fuel. Where should I start? I replaced the plug already. Thanks in advance.