It would take a very noticeable tweak to the k-member to affect alignment as the LCA pins are very close to the frame. I've straightened an A-body k-member that was badly bent in an accident, but running over a pipe...I kind of doubt it, at least I'd have to see it. Before you spend any more money pull your k-member and compare it to the one you bought (check for square, flatness of the mounting ears, etc.). Post up some pics.