I picked up this old projector made by Bell & Howell. It looks like it's from the 1960s or early 1970s. Anyways, the lens was covered with dust so I tried to clean it before trying out the projector. As I cleaned it, I did not notice until it was too late that I was pushing the glass lens deep into the tube. Now I cannot get the glass out of the tube - the lens is not where it is supposed to be and I don't know how to put it back. Does anyone know how to get the lens back out? What are my alternatives? The lens is supposed to be out to the edge, not in the middle of the tube.