The UK version of this would be riding down a cycle path and getting a puncture off a broken Smirnoff bottle, or getting clotheslined by some old granny's extendable dog lead. Those things are killer.
factory settings will always remain the same. from the sounds of it there's an air leak, which is sucking in more air than it would normally get when at factory settings, so the only cure is to richen it further.
Monkey Man, your the man!
Exactly my thoughts, weak or powerful nitro I don't care, I want to annoy people with the sound and sniff to get high on those smells lol