Have you hit anything real hard, lately, that might have bent something? Slight movement is probably just a little wear in the wheel bearings. I doubt that would be enough to make the top sit in like you describe, since you say both sides are about the same and only one side is tilted in. It could possibly be a ball joint, but it's hard to tell without actually looking at it. If you had another 4-wheeler to sit beside it and compare the two. Maybe that would help. If I was there and could look and move it back and forth, myself, I could tell you in a minute. But I'm not, so that doesn't help.