Hi bro,
i noticed that when i had ago its worse than mine,
what did you mean by playing with o2 is there something on the dash you can do, and was that the YAMAHA dealer that said that ????
somewhere on here is how the site started its an interesting read bro also said something about that serging when i find it again i will send the link, hope you get the help you need and quick lol,
laters and peace out