Only a few techs out there I have talked to and even online talked to I trust.Totally respect that mindset.
Problem is, only a few of us have your chainsaw repairing/modifying capability.
I was at a echo dolmar dealer once and the tech was only one there.
I ask for the updated af cover for my 7900. He point at a echo and said this one. I walked out smh.
I had a stihl tech try and tell me the 261 piston was chromed. I laughed at him. SMH.
I could go on. Dont trust shops unless you know their folks actually know what their doing.