Respectfully, the service manual is a nice idea in theory. My office printer is a decade old and the diagrams look like cave paintings. A firm but careful whack on the side has un-stuck more jams than I can count. Sometimes you just need to jostle the gears loose before you can even see what to pull.

I used to blame the tooling, but a bad spindle will do that every time.

That's just the price of convenience, not a huge deal for a one-time thing.

Ugh, why do people think standing over you helps anything? That sounds so stressful, having someone watch your every move for three hours straight. It always makes you second guess yourself even when you know exactly what you're doing. I'd be so annoyed trying to focus with that kind of pressure. They probably have no idea how much they actually slowed you down.

Ugh, that's the worst. Home repairs always have a way of snowballing on you.