Running problem with my 462

Does it run?

 

Sorry, just getting back here. It runs at speed but won't idle. It will cut and has the power, but dies the second you let off of the trigger, or might idle, and die when you hit the trigger. I took it to this one place, because it was recommended to me and in the end they treated me right and didn't charge me anything but they didn't get all of the problems fixed. They just don't know enough. I took it down to another Stihl dealer that has good mechanics and demonstrated to a mechanic my issues and he figures it's probably the Mitronic parts some of you guys mentioned. I had to leave it with them.