Ya, Good Ideas, Thanks. Last time I adjusted the valves and reset the tps was about 10,000 miles ago, 2 oil changes back. Last time I sync'd the throttle bodies was about 600 miles from brand new. Could be time to check the throttle bodies again. Everything else is great and it's been running really sweet so far during this early spring. Did the new plug caps right around new as well. It's gotta be running hot for that plastic to melt. Both pipes are the same color.