I've just been informed by my local Husqvarna mechanic to not touch the carb. He says he modify's saws all the time and even sends racing saws to Australia, and I believe him on that, so he must have some kind of credibility in what he is saying. Although more so does blsnelling and westcoaster, and i fully trust you guys. It really comes down to the money. Do I spend the $200 + shipping to have my carb and coil done? Does the saw potentially run itself lean if it's doing some heavy milling, or is there some major problem waiting to happen if I don't get the work done? Or are you guys recommending the work so that I can get some performance gains and be happier that way haha! I really appreciate the input from you guys!! Thanks!