I'm not thinking the bump stops are the problem. Bump stops are used to protect the shock from damage in case you hit a huge hole that would bottom out the shock. In normal driving they just sit on top of the shock and do nothing. If the bump stop is tight on the shaft it will stick high up on the rod where it ends up anyway. First thing I'd do is inspect whats on your car. You may have a broken spring or somehow gotten a bad shock.

Les