Glad I did the valve adjustment.. I found that all the exhaust valves were wayy too tight on my 06MY. They were all around 6-7 thou.. The intake side was also tighter than it should have been. I adjusted them on the looser side of the spec per Billman. I've put 6k miles on the car since I purchased it in early 2022. probably should have inspected it sooner. Oil labs all check out and the engine is mint. I guess I had a bit of plain luck on my side.