Gotcha. You mean it is likely out of alignment or has some sort of frame damage due to the accident. I was thinking "Dropped" When the ad clearly says "Laid it down a couple of times." On a Harley Site the advice is as follows:
"
Find either a local indy or dealer who can check your bike for alignment. That will possibly involve you first removing all the bodywork, tank, fenders etc, for inspection and checking geometry. Checking for accident damage of the frame is one of those jobs best left to experts!"
or
"I used to work in a frame and fork repair shop.
We'd take the fork all apart and roll the tubes on flat surface, like a machinist's granite. A glass table with a thick top will work too. If there's any uneveness in how the tube rolls, its bent. A lot of them we could straighten with an arbor press. That's kind of an art though and you'll ruin a few tubes learning the feel. Tree and top clamp, along with the fork tubes, everything should go together square and true with no force. Again, a slight bend in a tree could be worked out, top clamp was usually replaced.
Any front end damage, we'd change the steering head bearings. An impact would crack a race or the ball bearings would pound little round dents in the races. Really messes up your steering, that.
We had a long very straight rod with a pair of cones on one end. The cones would center in the steering head races and the rod stuck down from the (carefully machined) center of the cones. We'd carefully jack up the frame, making sure it was level, and hold a vertical level on the rod at right angles to the frame centerline. Any tilt to the side, we'd know the frame was tweaked. In a front end hit, usually the steering head is bent down, and you can see the damage at the top of the frame down tubes, and the backbone tube. Again we could straighten the frame, but that takes a shop full of special tools and a lot of skill.
You can do this stuff, but it takes some special tools and a lot of knowledge."
So I am going to buy it if he agrees to let me have it checked out at a Mechanic's Shop 1st. (Pete's Cycle in Machesney Park Illinois)