I also thought about the gas. I've only filled it up 4 times since I took delivery of it. One of those was 89 octane, the other 3 where 93 octane. I also thought it might be the brand of gas. I normally use Shell, but someone else recommended Amoco Gold.

After I found the other post on this issue (thanks Jamikest), I see that I am not alone. It appears that they were also told it is normal noise, so I guess I will live with it. At least my wind noise problems help to conceal the valve noise. :lol: