“When finished, I fed it into the machine one time-2 was not necessary.”
You are correct, optical readers are on BOTH sides of the scan and the ballot only needs to be fed into the machine once. That’s why there was a big SNAFU about some polling stations being advised that sharpies could be used - because sharpies could cause bleed-through of the ballot and potentially create errors or spoiled ballots.
The computer repairman who repaired Hunter’s laptop is not dead!
Here is is recent statement about what happened to him:
https://bigleaguepolitics.com/hunter-biden-laptop-store-owner-speaks-out-after-going-into-hiding/