SO Was It A Husqvarna Autotune Issue? Do Husqvarna 572's Have A Problem? "Dead Saw Salvage" Part 2

Part 2 of 5
Dead Saw Salvage Series, TWO 572's both whooped and not in running condition. This series is about how a "DIY" type can work around the lack of a Husqvarna Dealer network & still get these 500 series Autotunes together and running from a pile of broken junk parts.
572 Dead Saw Salvage Series Summary:
Part 1 of 5 Loss Of Husqvarna Dealer Network, Husqvarna 572 Case Split , Replace Bearing & Assembly Tips , Crank Case Disassembly & replacement of PTO side Bearing in A Husqvarna 572
Part 2, Diagnostics & Statement relative to saw modification "cult" types selling services on line using UA-cam as a sales platform.
Part 3, Top End Assembly & First Start Of The First of TWO Dead 572's
Part 4, Replacing Chain Brake Handle , Anti Vib Spring & General Details To Make This Saw Work Ready
Part 5 Second Dead Saw Salvage , Stripped Muffler Bolt "Red Neck Repair"
A "Dead Saw Salvage" Video :) Haven't done one of these in a while.
So this is part 2 of 5, The analysis of the failure that side lined this first of 2 "Dead" saws. AND a discussion on the "state" of the UA-cam Saw modification craze. Might offend some , but some one has to do this.