Husqvarna 372xp X-Torq vs. Original Edition Differences & What Straight Gassed Damage Looks Like

Tried to keep it basic and "light", not too lectur-ey while still pointing out some of the more important differences. Not my favorite subject, but since I have to rip a pile of them apart to build the cases into a better place, might as well talk about that as its a question that shows up frequently.
AND I didn't point out that while the nylon caged bearings began to show up before 2010, they are now the norm as they populate every X-Torq 372 variant I have seen to this point in time.