Ok then.i did say that he might have meant that the redesign was from carb yo mtron is what he might have meant.i was mearly only trying to help and share some info i heard.i am also cery aware of the thing called epa sir.i also srmtated the the member that was from germany that it might be diff.in his country then are as well.for simple fact that i didnt go into detail about was epa.ie examole ms 341 euro 361 u.s. in not trying to argue with anyone,byt the way i read your post is that members know more then simeone who works at a certified stihl ship who has every certification that can be given by stihl.whom also gos to factory and has toured factory seen the production lines.,and there check system.ok well i will not comment anymore on this thread about it.thank you have a good day.time will tell what happens