Toshiba TP55E80 projection T.V

I have a Toshiba TP55E80 projection tv. The left side of the screen will not align. When I use the grid, it just will not line up. The picture and text has a ghost effect. Any ideas on how to fix this. Are the guns the problem? I don't want to spend alot as the set is older, but the right side of the picture is fine. Thanks----Alan