Stuff like this bugs me. It's like a cliffhanger episode on a TV show that then gets cancelled and you never get to find out what happened.
But sometimes you don't want to know what really happened. Sometime its better not to know.
Only if you're the guy that sold the motorcycle only to find the new owner got it going at the end of your driveway to load it onto the trailer because the only issue was a simple "common problem" type scenario that they fixed in 30 seconds flat....IE a loose ground wire at the frame or something.
If you're the rest of us....we need to know.
ouch, that's like a sucker punch in the gut, while the opponent is walking away and laughing.
I will admit to having done almost exactly that sort of thing over the years with many different purchases ranging from electronics to outdoor equipment.
There's a lot of things that die from "Common problems" that are easily fixable if you know your way around tools, and how to follow online tutorials.