I cut a couple sweet gums near my yard a few years ago. I immediately cut it to firewood length and stacked it off the ground on a pallet and stored it outside in rows just like any of my other firewood. It sprouted fungus out of the end of the rounds and rotted inside its own bark within one...
"Sawyer" comes in an aerosol can. Windex style bottles too. Dont put it on your skin. It is Permethrin. Same stuff as in bug bombs. Claims to stay on your clothes through multiple washings.
I am interested in this fix as well. I have not gone to the lengths that you have but do not get any oil on automatic and barely any on manual. Thats the only thing keeping me from being able to sell my timber bear that is in otherwise great shape. Used very little.
Doesnt take too large of a saw. A 14" bow usually takes a 25" (84dl 3/8) chain but you are only cutting with 12" or so of the bar at a time. I use an 044 on mine and it works damn good. Thats way more saw that it needs but overkill pleases me.
They would have been much better off not showing those folks easily picking up those big rounds with one hand to dump them out of that chain. I believe you could wave a dull pocket knife in the general direction of that wood and render it to toothpicks.