Hey guys. My Stihl FS 85RT has a bit of a problem. The head keeps spinning after I let go of the clutch and won't stop at all. I took it back to the dealer, thinking that if I messed with it the warranty would be void, so I just took it to them. They had it for 3 days, tried to fix it but that didn't do jack. Took it back again just last week and had them fix it again and they still can't fix it Any ideas on what can be done? They told me that they lowered the jetting screws so that it idles lower, since they thought it was idling too high. Now it's at the point where if it goes any lower, it won't run. I really don't know what to do. I'm not going to mess with it for warranty reasons, and if the dealer doesn't fix it, I'm going to call Stihl and make them fix it and make them give a replacement to use. I'm not going to get ripped out of a trimmer for a month while it's getting worked on. I thought by spending $350 I wouldn't get problems for stuff like this. Other than this problem, the trimmer has been a workhorse. Any ideas on how to get this fixed? It's really a safety concern for me because sometimes I have to set it down and move things out of the way and if the head is spinning and someone gets hit by the string, I'm going to be in trouble. Thanks guys!