[Charlie]

Did you try adjusting the fine tuner? It's on the back of the set.... not on the front as others are. There's also a course fine tuner in there... just a hole... I think it's labeled as "bull's eye adjustment" with an arrow pointing to it. You can use a small flathead screw driver to adjust it. Before adjusting it, place the fine tuner knob in a middle of the road position. In case you have to put it back, remember how many times you turned it.