I still don't understand why you think the serial numbers don't match up. I'd like to see where that serial number matches up with the '85 model year. From the vintage trek site:
http://www.vintage-trek.com/SerialNos85.htm
The table contains dates of frame serializing, and are
not necessarily model year. At some time late in each year (generally September or October) frames were built for (then painted with colors for) the next model year.
The reason I didn't like that bike probably had to do with the geometry of that particular model. It had the "I'm stuck somewhere between a road bike and a touring bike" syndrome. I was trying to use it as a regular road bike, which is why I personally didn't like it. I think it was the flex in the chainstays that really got me, probably if they were shorter they would have been stiffer and i would have liked it more. I take back saying I wouldn't wish anyone to have it, it would probably be a perfect bike for some people, just not me.