When it's all done and working, ?maybe you will consider Apple certification, and start a second career fixing iMacs out there in the wilds of Montana.
I don't think I'll be fixing many iMacs in Montana. I live just outside Philadelphia.
I was referring to Jim Robertson:
"Still sitting on the fence regarding doing major surgery on my 2017 21.5¡± 4K iMac¡"
Jim Saklad