I had a problem with a co-worker's saw, a husky 560xp.
My partner had an air leak, the warranty year was just over. He was at the dealer shop (the oldest stihl dealer in France, and also Husqvarna dealer since 2008).
After two weeks, he called them, the saw wasn't fixed. They told him the saw was too used, no more compression, etc. They did not even try to plug it to the computer.
He came back to me, I put my compression gauge on the saw. 170psi. Pretty good for a stock saw.
Then, he get back to the dealer shop with my gauge and his saw. They refused to fix it.
Another friend had an air leak on a one year old 461. They asked him 480€ to fix it.
I made a vacuum test on this saw, then I came back to the dealer shop myself, and I bought a crank seal for my friend. I fixed the saw, and never get back to this shop.