I get a metallic noise from the air box when you hit around 4100 to 4400rpm in every gear + when standing. Doesn't really affect the pull through the gear too much but there is a very slight blip in power when the noise is there (hardly noticeable). I presume it's the airflow plate that's causing it, I did have the rubber boot off to check it a while back but the bolt in the center of the plate was tight enough and there wasn't anything visibly wrong around the rim of the plate. Anyone have any clues to what it could be and how I can solve it? Don't really want to take the fuel lines off etc.. Is this a common problem with K-jet's? Cheers if anyone can help
