I had a Z90 when I was a kid and it was tough as a pine knot, and faster than expected. Bought it from a guy who thought his kids had kill it, and leaned it up against the side if his house to rust away. Electrics were the weakest link in that bike. Don't know about other Aero's. I've always thought that Ohm's law didn't really take hold in Europe 'til at least the 1990's. Mine was great after we stripped all the unnecessary electrics off it. Not much left but a kill switch. Then it was ride, wreck, straighten, ride some more.
Adventure is when everything goes wrong. That's when the adventure starts.
- Yvon Chouinard