I just go back from the Stihl Update school. Stihl is going to introduce a new trimmer that has an electric carb. Yes, you read that right. The carb is going to have the high speed jet replaced with a solenoid wired into the coil and it will change the mix 30 times a second based on what the coil tells it. They also have in the works a EFI trimmer. Before you know it you will have to have a computer to plug into you trimmer or chain saw to run test just like your car. When I first got into this business is was so simple and now you have to call NASA to work on just about anything.Where is it going to end? I miss the old days of points and condenser ignition.