I don't know if it warped from heat or just deformed from sitting for a very long time. Normally I don't trust stories or care about mileage on bikes. However, I think the story on this one is true that it was purchased from the original owner and he kept it in a garage and rode it very infrequently. It has 12k on it, but I've never seen one this clean. The wire colours are still brand new looking. Even the CDI ground strap in that area is incredibly clean and the CDI harness still has the parts number sticker on it with the Japanese lettering. Something I've never seen before except on true NOS units for sale.
A bit OT, but the reason I don't trust the stories or care if a bike has "low mileage" is that my theory with most bikes, especially the older ones is someone bought it new and brought it in for tune ups when it was still under warranty. Most of these bikes get trashed around 10k to 20k. I think what happens is they stop doing the maintenance because they didn't get it for free any more or just stopped caring. It never seems to run quite right as it did before, so then they ride it less. Then a few years later they try to fire it up, but the carbs are gummed up from varnished gas and the battery is dead. Maybe they put new gas in it and a new battery, then it just leaks gas badly. Then it sits for another few years, then they attempt to replace the float needles with whatever aftermarket crap kit they find and it never runs quite right. Sits for a few more years, thinking they'll get around to it and then just eventually get rid of it.
Personally, I'd rather see something that runs strong and proper at 30k-40k as that means someone cared enough to maintain it and actually ride it. It may have even had things done at this mileage like wheel bearings, fork seals, etc.
Another OT thing, but I noticed when I did the front forks on this that the manual bikes have a 14mm hex at the top of the fork tube to hold the spring in place. The automatic does not have this. It's pretty nice actually as it makes it easier to remove the hex at the bottom. I'm pretty sure the fork tubes are the same between both bikes, and I believe the automatic had the threads for it so I don't see why you couldn't upgrade to that if you wanted to. Not sure if there's any real advantage beyond just making it easier to replace the seals again, which shouldn't be needed for a long time. I also noticed the fork cap bolt is significantly larger. Something like 27mm I believe. The automatic I think was 21mm or something to that effect.